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Network Working Group                                          A. Newton
Internet-Draft                                            VeriSign, Inc.
Expires: May December 5, 2003                                   November 04, 2002                                  June 06, 2003


     IRIS - A Domain Registry Schema
                     draft-ietf-crisp-iris-dreg-01 (dreg) Type for the Internet Registry
                          Information Service
                     draft-ietf-crisp-iris-dreg-02

Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC2026.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.
   Internet-Drafts.

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   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at http://
   www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on May December 5, 2003.

Copyright Notice

   Copyright (C) The Internet Society (2002). (2003).  All Rights Reserved.

Abstract

   This document describes an IRIS (draft-ietf-crisp-iris-core-01.txt (draft-ietf-crisp-iris-core-02.txt )
   registry schema for registered DNS information.  The schema extends
   the necessary query and result operations of IRIS to provide the
   functional information service needs for syntaxes and results used by
   domain registries and registrars.









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Table of Contents

   1.    Introduction . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.    Document Terminology . . . . . . . . . . . . . . . . . . . .  4
   3.    Schema Description . . . . . . . . . . . . . . . . . . . . .  5
   3.1   Query Derivatives  . . . . . . . . . . . . . . . . . . . . .  5
   3.1.1 <listRegistrars> Query . . . . . . . . . . . . . . . . . . .  5
   3.1.2 <findDomainsByRegistrant> Query  . . . . . . . . . . . . . .  5
   3.1.3 <findDomainsByName> Query  . . . . . . . . . . . . . . . . .  5
   3.1.4 <findDomainsByI18NName> Query  . . . . . . . . . . . . . . .  6
   3.1.5 <findContacts> Query . . . . . . . . . . . . . . . . . . . .  6
   3.1.5
   3.1.6 <findDomainsByHost> Query  . . . . . . . . . . . . . . . . .  6
   3.1.7 Contact Search Group . . . . . . . . . . . . . . . . . . . .  7
   3.2   Result Derivatives . . . . . . . . . . . . . . . . . . . . .  6  7
   3.2.1 <domain> Result Omission Types . . . . . . . . . . . . . . . . . . . . . .  6 .  7
   3.2.2 <host> <domain> Result  . . . . . . . . . . . . . . . . . . . . . . .  8
   3.2.3 <contact> Result <domainVariant>  . . . . . . . . . . . . . . . . . . . . . .  9 10
   3.2.4 <registrationAuthority> <host> Result  . . . . . . . . . . . . . . . . . . 10
   3.3   Generic Code Derivatives . . . . . 11
   3.2.5 <contact> Result . . . . . . . . . . . . . . . . . . . . . . 11
   3.4   Support for <iris:lookupEntity>
   3.2.6 <registrationAuthority>  . . . . . . . . . . . . . . 11
   4.    Domain Registry Width . . . . 13
   3.3   Generic Code Derivatives . . . . . . . . . . . . . . . . . . 13
   3.3.1 <searchTooWide>  . 12
   4.1   "Thick" . . . . . . . . . . . . . . . . . . . . . 13
   3.3.2 <languageNotSupported> . . . . . 12
   4.2   "Thin" . . . . . . . . . . . . . . 13
   3.4   Support for <iris:lookupEntity>  . . . . . . . . . . . . . . 12
   5. 13
   4.    Formal XML Syntax  . . . . . . . . . . . . . . . . . . . . . 14
   6. 15
   5.    BEEP Transport Compliance  . . . . . . . . . . . . . . . . . 25
   6.1 30
   5.1   Message Pattern  . . . . . . . . . . . . . . . . . . . . . . 25
   6.2   Authority Resolution 30
   5.2   Server Authentication  . . . . . . . . . . . . . . . . . . . 30
   6.    URI Resolution . 25
   6.3   Server Authentication . . . . . . . . . . . . . . . . . . . 25 . . . 31
   7.    Internationalization Considerations  . . . . . . . . . . . . 26 32
   8.    IANA Considerations  . . . . . . . . . . . . . . . . . . . . 27 33
   9.    Security Considerations  . . . . . . . . . . . . . . . . . . 28 34
         References . . . . . . . . . . . . . . . . . . . . . . . . . 29 35
         Author's Address . . . . . . . . . . . . . . . . . . . . . . 30 36
   A.    An Example Request and Response  . . . . . . . . . . . . . . 31 37
   B.    An Example Database Serialization  . . . . . . . . . . . . . 34
         Full Copyright Statement 41
   C.    Acknowledgements . . . . . . . . . . . . . . . . . . 37 . . . . 44
         Intellectual Property and Copyright Statements . . . . . . . 45













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1. Introduction

   This document describes an IRIS registry schema for Internet domain
   registries using an XML Schema [4] derived from and using the IRIS
   [5] schema.  The query and result types outlined in this document are
   based on the functional requirements described in CRISP [11].

   The schema given is this document is specified using the Extensible
   Markup Language (XML) 1.0 as described in XML [1], XML Schema
   notation as described in XML_SD [3] and XML_SS [4], and XML
   Namespaces as described in XML_NS [2].








































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2. Document Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC2119 [13].














































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3. Schema Description

   IRIS requires the derivation of both query and result elements by a
   registry schemas.  These descriptions follow.

   References to XML elements with no namespace qualifier are from the
   schema defined in Section 5. 4.  References to elements with the "iris"
   XML namespace qualifier are from the schema defined in IRIS [5].

   The descriptions contained within this section refer to XML elements
   and attributes and their relation to the exchange of data within the
   protocol.  These descriptions also contain specifications outside the
   scope of the formal XML syntax.  Therefore, this section will use
   terms defined by RFC 2119 [13] to describe the specification outside
   the scope of the formal XML syntax.  While reading this section,
   please reference Section 5 4 for needed details on the formal XML
   syntax.

3.1 Query Derivatives

3.1.1 <listRegistrars> Query

   This query MUST return a result set of zero or more
   <registrationAuthority> elements.  See Section 3.2.4. 3.2.6.

3.1.2 <findDomainsByRegistrant> Query

   <findDomainsByRegistrant> finds a domains by searches on fields
   associated with the a domain's registrant.  A search constraint of
   <baseDomain> MUST restrict the results to domains only underneath the
   domain specified by its content if it is present.

   The <field>
   element contains allowable search fields are handled with either the name
   <contactHandle> element or one of the field associated with elements in the registrant
   "contactSearchGroup" (see Section 3.1.7).  The <contactHandle>
   element allows for the domains to be used in selected based on the search.  See  for registrant
   having the list of allowable content for
   this element.  The <beginsWith> element specified contact handle.

   This query also provides optional <language> elements containing
   language tags.  Clients may be used use these elements to specify inform the
   beginning part server
   of the <field> target.  The <endsWith> element a desired search algorithm that may be
   used to specify benefit from the ending part determination
   of the <field> target. desired languages.  Servers MAY use this information in
   processing the query, such as input to normalization routines to aid
   in more effective searches.

3.1.3 <findDomainsByName> Query

   The <findDomainsByName> query finds a domains by the name of the a domain



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   as it is known in DNS.  A search constraint of <baseDomain> MUST
   restrict the results to domains only underneath the domain specified
   by its content if it is present.  The content of this element MUST be
   a valid domain name according to RFC 1035 [12].  The <namePart>
   element restricts the scope of the query with its child elements.
   The <beginsWith> element specifies the beginning of the domain name.
   The <endsWith> element specifies the end of the domain name.






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   contents of <beginsWith> and <endsWith> elements MUST be ASCII.

3.1.4 <findContacts> <findDomainsByI18NName> Query

   <findContacts> searches for contacts given search constraints.

   The
   <field> element specifies <findDomainsByI18NName> query finds a domains by the data name of the contact to be used
   domain as it is known in DNS.  It differs from the
   <findDomainsByName> query by allowing the scope of the query to
   narrow take
   into consideration internationalized domain names.

   A search constraint of <baseDomain> MUST restrict the search.  See Section 3.2.3 for results to
   domains only underneath the allowable domain specified by its content if it is
   present.  The content of this element. element MUST be a valid domain name
   according to RFC 1035 [12].  The <namePart> element restricts the
   scope of the query with its child elements.  The <beginsWith> element
   specifies the beginning part of the <field> target. domain name.  The <endsWith> element
   specifies the end part of the
   <field> target. domain name.

   This query also provides optional <language> elements containing
   language tags.  Clients may use these elements to inform the server
   of a desired search algorithm that may benefit from the determination
   of the desired languages.  Servers MAY use this information in
   processing the query, such as input to normalization routines to aid
   in more effective searches.

3.1.5 <findContacts> Query

   <findContacts> searches for contacts given search constraints.

   The allowable search fields are handled by one of the elements in the
   "contactSearchGroup" (see Section 3.1.7).

   This query also provides optional <language> elements containing
   language tags.  Clients may use these elements to inform the server
   of a desired search algorithm that may benefit from the determination
   of the desired languages.  Servers MAY use this information in
   processing the query, such as input to normalization routines to aid
   in more effective searches.

3.1.6 <findDomainsByHost> Query

   This query does a simple search for the domains being hosted by a



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   name server.  The search is constrained using either the host name,
   host handle, IPv4 address, or IPv6 address of the name server.

3.2 Result Derivatives

3.2.1 <domain> Result

3.1.7 Contact Search Group

   Some of the queries above have similar query contraints for searching
   on contacts.  This section describes those common parameters.

   <commonName> allows the query to be contrained based on the common
   name of the contact.  The <domain> result represents contraint can either contrain the query by
   an instance of exact match using the <exactMatch> element, or it may contrain the
   query by a domain assignment.
   The children subset of the <domain> element are as follows:

   o  <domainName> - common name using the full <startsWith> and
   <endsWith> elements.

   <organiztion> allows the query to be contrained based on the
   organization name of the domain contact.  It has the same semantics as it is in DNS.  The
      contents the
   <commonName> element.

   <eMail> contrains the query based on the e-mail address of this element MUST the
   contact.  This may be a domain name as specified done by RFC
      1035 [12].

   o  <domainHandle> - a registry unique assigned identifier to a
      domain.

   o  <nameServers> - an element containing multiple children.  Each
      child is an <iris:entityURI> exact e-mail address using the
   <exactMatch> element as described or by IRIS [5]. any e-mail address in a domain using the
   <inDomain> element.  The referent of each <iris:entityURI> element <inDomain> MUST be only contain a <host>
      (Section 3.2.2) result.

   o  <registrant> - valid domain
   according to RFC 1035 [12] (i.e.  no '@' symbol).

   The <city>, <region>, and <postalCode> elements restrict the scope of
   the query based on the city, region, or postal code of the contact,
   respectively.  Each one must only contain an <exactMatch> element
   containing a <iris:entityURI> reference
      to the registrant exact city, region, or postal code (i.e.  no substring
   searches).

3.2 Result Derivatives

3.2.1 Omission Types

   Several of the results in this domain.  The referent MUST registry type have values that cannot
   be a
      <contact> (Section 3.2.3) result. given but must be specified as present.  In order to achieve this,
   some of the results use the following element types:

   o  <domainContacts>  "dateTimeOmissionType" - an element representing contacts associated
      with the domain.  Each of its children are <contact> container
      elements contains an <iris:entityURI> reference to a <contact>
      (Section 3.2.3) result coupled with a <role> element.  The <role>
      element the XML Schema [3] data type
      "dateTime".

   o  "stringOmissionType" - contains one of the following domain-to-contact
      relationships:

      *  billing

      *  technical XML Schema [3] data type
      "string".

   o  "normalizedStringOmissionType" - contains the XML Schema [3] data
      type "normalizedString".

   o  "tokenOmissionType" - contains the XML Schema [3] data type



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      *  administrative

      *  legal

      *  zone

      *  other                       June 2003


      "token".

   As specified, they are nillable and therefore may be present with
   empty content or present with their specified content.  And their
   specified cardinality allows their absense.

   Each of these element types MUST have one or more of the following
   boolean attributes if they are present without content:

   o  <lastContactModificationDateTime>  'private' - if true, this specifies that the last time a
      contact for the domain was added or removed. content is absent
      because it may never be published.

   o  <lastContactModificationBy>  'denied' - an element with a child of
      <iris:entityURI>.  The referent if true, this specifies that the content is a <contact> (Section 3.2.3)
      result responsible for absent
      because policy does not allow it to be given under the last addition or removal current
      level of a contact
      for this domain. access.

   o  <activationStatus>  'unspecified' - an element specifying if true, this specifies that the status content is absent
      for an unspecified reason.


3.2.2 <domain> Result

   The <domain> result represents an instance of the
      domain.  This element contains one a domain assignment.
   The children of the following:

      *  reservedDelegation - permanently inactive

      *  assignedAndActive - normal state

      *  assignedAndInactive - new delegation

      *  assignedAndOnHold - dispute

      *  revoked - database purge pending

      *  unspecified <domain> element are as follows:

   o  <delegationReference>  <domainName> - an element containing an <iris:entityURI>
      element, the referent full name of which the domain as it is a <domain> (Section 3.2.1). in DNS.  The
      intention
      contents of this element is to point to the downstream delegation
      reference.  Therefore, if this is a result given back by MUST be a domain
      registry, it should point to the domain in the domain registrar or
      registrant service. name as specified by RFC
      1035 [12].

   o  <registry>  <domainHandle> - contains a child of <iris:entityURI> specifying the
      domain registry operator for this domain represented unique assigned identifier to a
      domain.

   o  <nameServers> - an element containing multiple children.  Each
      child is an <iris:entity> element as described by IRIS [5].  The
      referent of each <iris:entity> element MUST be a
      <registrationAuthority> <host> (Section
      3.2.4) result.

   o  <registrar>  <registrant> - contains an element containing a child of <iris:entityURI> specifying <iris:entity> reference to
      the
      domain registrar operator for registrant of this domain represented by domain.  The referent MUST be a
      <registrationAuthority> <contact>
      (Section 3.2.4). 3.2.5) result.

   o  <initialDelegationDateTime>  Domain contacts - an element containing the date and
      time of following elements contain contacts with a
      relationship to the initial delegation of this domain.  The children of these elements are
      <iris:entity> elements as described by IRIS [5].  The referent of
      each <iris:entity> element MUST be a <host> (Section 3.2.5)
      result.

      *  <billingContacts>



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   o  <lastRenewalDateTime> - an element containing the date and time of
      last renewal of this domain.

   o  <expirationDateTime> - an element containing the date and time of
      the expiration of this domain.                       June 2003


      *  <technicalContacts>

      *  <administrativeContacts>

      *  <legalContacts>

      *  <zoneContacts>

      *  <abuseContacts>

      *  <securityContacts>

      *  <otherContacts>

   o  <lastDelegationModificationDateTime>  <lastContactModificationDateTime> - an element containing the
      date and time of specifies the last time one of a
      contact for the nameservers domain was added or
      removed for the delegation of this domain. removed.

   o  <lastDelegationModificationBy>  <lastContactModificationBy> - an element with a child of
      <iris:entityURI>.
      <iris:entity>.  The referent MUST be is a <contact> (Section
      3.2.3) 3.2.5) result and be
      responsible for the last addition or removal of a nameserver contact for this
      domain.

   o  <lastVerificationDateTime>  One of the following status elements:

      *  <reservedDelegationStatus> - permanently inactive

      *  <assignedAndActiveStatus> - normal state

      *  <assignedAndInactiveStatus> - new delegation

      *  <assignedAndOnHoldStatus> - dispute

      *  <revokedStatus> - database purge pending

      *  <unspecifiedStatus>

   o  <delegationReference> - an element containing an <iris:entity>
      element, the date and
      time of the last time the data for this domain was verified by the
      responsible registration authority.

   o  <iris:seeAlso> - an element containing <iris:entityURI> elements
      specifying entities that are indirectly associated with this
      domain.


3.2.2 <host> Result

   The <host> element represents an instance referent of which is a host registration. <domain> (Section 3.2.2).  The children
      intention of the <host> this element are as follows:

      <hostHandle> - a registry unique assigned identifier for the host.

      <hostName> - the fully qualified domain name of is to point to the host.  The
      contents of downstream delegation
      reference.  Therefore, if this element are is a result given back by a domain name and MUST conform
      registry, it should point to RFC
      1035 [12].

      <ipV4Addresses> the domain in the domain registrar or
      registrant service.

   o  <registry> - contains a list of <ipV4Address> elements, the
      content child of which MUST conform to <iris:entity> specifying the a valid IP version 4 host
      address as specified
      domain registry operator for this domain represented by RFC 791 [8].

      <ipV6Addresses> a
      <registrationAuthority> (Section 3.2.6) result.

   o  <registrar> - contains a list of <ipV6Address> elements, the
      content child of which MUST conform to <iris:entity> specifying the a valid IP version 6 host
      address as specified



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      domain registrar operator for this domain represented by RFC 2373 [7].

      <hostContact> - a list
      <registrationAuthority> (Section 3.2.6).

   o  <initialDelegationDateTime> - an element containing the date and
      time of the initial delegation of <iris:entityURI> elements specifying
      contacts associated with this host.  The referents MUST be
      <contact> (Section 3.2.3) results.

      <createdDateTime> domain.

   o  <lastRenewalDateTime> - an element containing the date and time of
      last renewal of this



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      host was created.

      <lastModificationDateTime> domain.

   o  <expirationDateTime> - an element containing the date and time of
      the expiration of this host was last modified.

      <iris:seeAlso> domain.

   o  <lastDelegationModificationDateTime> - an element containing <iris:entityURI> elements
      specifying entities that are indirectly associated with this host.


3.2.3 <contact> Result

   The <contact> element represents an instance of a contact
   registration.  The children of the <contact> element are as follows:

      <contactHandle> - a registry unique assigned identifier for this
      contact.

      <commonName> - the name of the contact.

      <language> - a specification
      date and time of the language code to use to
      localize the data in this result.

      <organization> - an element containing the organization name last time one of the contact.

      <eMail> - elements containing the e-mail address for this contact.

      <address> - an element containing the street address for this
      contact.

      <city> - an element containing the city for this contact.

      <region> - an element containing the national region for this
      contact.

      <postalCode> - an element containing the postal code nameservers was added or
      removed for this
      contact.

      <country> - an element containing the country for delegation of this contact.

      <phone> domain.

   o  <lastDelegationModificationBy> - an element containing the voice phone number with a child of
      <iris:entity>.  The referent MUST be a <contact> (Section 3.2.5)
      result and be responsible for this
      contact.

      <fax> - an element containing the facsimile phone number last addition or removal of a
      nameserver for this
      contact.

      <createdDateTime> domain.

   o  <lastVerificationDateTime> - an element containing the date and
      time this
      contact was created.



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      <lastModificationDateTime> - an element containing of the date and
      time this contact was last modified.

      <lastVerificationDateTime> - an element containing the date and time this the data for this contact domain was last verified to be correct by the appropriate
      responsible registration authority.

   o  <iris:seeAlso> - an element containing <iris:entityURI> <iris:entity> elements
      specifying entities that are indirectly associated with this
      contact.
      domain.


3.2.3 <domainVariant>

   The "contactSearchFieldType" definition specifies <domainVariant> result represents an instance of a list
   internationalized domain name variant.  The children of the above
   fields allowable to be used for
   <domainVariant> element are as follows:

   o  <domainName> - the purpose full name of narrowing searches
   that may yield contact or contact-related results.  Searches MUST use
   only these fields. the domain as it is in DNS.  The field list is:

   o  contactHandle

   o  commonName

   o  organization

   o  eMail
      contents of this element MUST be a domain name as specified by RFC
      1035 [12].

   o  city  <variantOf> - an element with a child of <iris:entity>.  The
      referent MUST be a <domain> (Section 3.2.2) result and be the
      internationalized domain name for which this is a variant.

   o  region  <blockedStatus> - an element indicating that this variant is
      blocked from registration.

   o  postalCode  <unblockedStatus> - an element indicating that this variant is not



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      blocked from registration.

   o  country


3.2.4 <registrationAuthority>  <registeredDomain> - an element with a child of <iris:entity>.
      The <registrationAuthority> referent MUST be a <domain> (Section 3.2.2) result and be the
      domain representation if this variant is registered.  The
      <registeredDomain> element is only allowed if the
      <unblockedStatus> element is present, but it is not required.


3.2.4 <host> Result

   The <host> element represents an entity capable instance of
   registering domains. a host registration.
   The <serviceInstance> children of the <host> element are as follows:

   o  <hostHandle> - a registry unique assigned identifier for the host.

   o  <hostName> - the fully qualified domain name of the host.  The
      contents of this element are a domain name and MUST conform to RFC
      1035 [12].

   o  <ipV4Addresses> - contains a list of <ipV4Address> elements, the
      content of which MUST conform to the a valid IP version 4 host
      address as specified by RFC 791 [8].

   o  <ipV6Addresses> - contains a list of <ipV6Address> elements, the
      content of which MUST conform to the a valid IP version 6 host
      address as specified by RFC 2373 [7].

   o  <hostContact> - a list of <iris:entity> elements specifying
      contacts associated with this host.  The referents MUST be
      <contact> (Section 3.2.5) results.

   o  <createdDateTime> - an element containing the date and time this
      host was created.

   o  <lastModificationDateTime> - an <entityURI> element
   pointing to the entity "id" in the entity class "service-definition".
   The authority areas found in containing the referent MUST be domains date and
      time this host was last modified.

   o  <iris:seeAlso> - an element containing <iris:entity> elements
      specifying entities that are the
   domains for which a given registration authority has control. indirectly associated with this host.


3.2.5 <contact> Result

   The <type> child <contact> element determines the role in which this
   registration authority plays in the process represents an instance of registering domains. a contact
   registration.  The intent children of this element is to explain the various roles <contact> element are as follows:

   o  <contactHandle> - a
   registration authority may have with regards to the authority areas
   pointed to by the <serviceInstance> element.  A client MAY understand registry unique assigned identifier for this



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   the relationship of a registration authority with respect to a domain
   by                       June 2003


      contact.

   o  <commonName> - the placement name of the reference in the domain (e.g.  <registry> or
   <registrar>).

3.3 Generic Code Derivatives

   This schema defines only one <genericCode> derivative,
   <searchTooWide>.  Servers MUST use this error code when contact.

   o  <language> - a query
   capable specification of using the "contactSearchFieldType" (see Section 3.2.3)
   must be narrowed language code to yield a use to
      localize the data in this result.

3.4 Support for <iris:lookupEntity>

   The following types of named entities are recognized by

   o  <organization> - an element containing the
   <lookupEntity> query of IRIS via derivation organization name of
      the <entityClass>
   element: contact.

   o  host-name  <eMail> - elements containing the fully qualified domain name of a nameserver.
      Yields a <host> (Section 3.2.2) in e-mail address for this contact.

   o  <address> - an element containing the street address for this
      contact.

   o  <city> - an element containing the response. city for this contact.

   o  host-handle  <region> - an element containing the registry unique identifier given a nameserver.
      Yields a <host> (Section 3.2.2) in the response. national region for this
      contact.

   o  domain-name  <postalCode> - an element containing the fully qualified name of a domain.  Yields a
      <domain> (Section 3.2.1) in the response. postal code for this
      contact.

   o  domain-handle  <country> - an element containing the registry unique identifier given a domain.
      Yields a <domain> (Section 3.2.1) in the response. country for this contact.

   o  contact-handle  <phone> - an element containing the registry unique identifier given a voice phone number for this
      contact.
      Yields a <contact> (Section 3.2.3) in

   o  <fax> - an element containing the response. facsimile phone number for this
      contact.

   o  ipv4-address  <createdDateTime> - an element containing the IPv4 address of a nameserver.  Yields a <host>
      (Section 3.2.2) in date and time this
      contact was created.

   o  <lastModificationDateTime> - an element containing the response. date and
      time this contact was last modified.

   o  ipv6-address  <lastVerificationDateTime> - an element containing the IPv6 address date and
      time this data for this contact was last verified to be correct by
      the appropriate registration authority.

   o  <translatedContacts> - an element containing <iris:entity>
      elements specifying equivalents of a nameserver.  Yields a <host> this result that have been
      tranlated into other languages.  The referents MUST be <contact>
      (Section 3.2.2) in the response. 3.2.5) results.

   o  <iris:seeAlso> - an element containing <iris:entity> elements
      specifying entities that are indirectly associated with this



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4. Domain Registry Width

   As described                       June 2003


      contact.


3.2.6 <registrationAuthority>

   The <registrationAuthority> result represents an entity capable of
   registering domains.

   The <serviceInstance> child element of <registrationAuthority>
   contains an <entity> element pointing to the entity "id" in the
   entity class "service-definition".  The authority areas found in CRISP [11], domain registries have differing widths.
   Some are "thick" the
   referent MUST be domains and some are "thin." Regardless of the domain
   registry width, it is important domains for all levels of which a given
   registration authority has control.

   The registration authority type child elements, <registry>,
   <registrar>, and <other>, determine the hierarchy of role in which this
   registration authority plays in the domain delegation tree process of registering domains.
   The intent of this element is to have explain the same appearance from various roles a schema
   perspective.  This allows clients to traverse this tree
   registration authority may have with only regards to the
   need authority areas
   pointed to know by the <serviceInstance> element.  A client MAY understand
   the fingerprint relationship of a "domain registry" and without the
   need registration authority with respect to know separate fingerprints for what is a domain registry, a
   by the placement of the reference in the domain registrar, (e.g.  <registry> or even
   <registrar>).

3.3 Generic Code Derivatives

3.3.1 <searchTooWide>

   Servers MAY use the <searchTooWide> error code when a domain registrant.  Therefore, query capable
   of using one of the schema
   defined in this document MUST elements from the contact search group (Section
   3.1.7) must be used at all levels despite narrowed to yield a result set acceptable to the width
   policies of the domain registry model.

   However, implementers will need to take into consideration the
   instances where search continuations server operator.

3.3.2 <languageNotSupported>

   The queries <findDomainsByRegistrant>, <findDomainsByI18NName>, and entity references either
   defined in this document or defined as part of
   <findContacts> support optional language tags that allow a client to
   suggest to a server the base result, as
   defined languages in IRIS [5], will need to be employed which to support scope the
   appropriate registry width.  The following sections are only
   guidelines and queries.  If
   a client passes to the server a language specified in Section 2 does not apply and
   is not used.  Implementers should determine the appropriate results
   for their particular implementation as which the two following sections are
   generalized and may server does not be appropriate to all models of registries.
   All guidelines noted in
   support, the following sections are subject server MAY use this error code to policy
   settings indicate that one of
   the operators involved.

4.1 "Thick"

   For thick registries, searches languages is not supported.

3.4 Support for and lookups of domains should
   result in a <domain> element.  This element should contain most <iris:lookupEntity>

   The following types of entity classes are recognized by the contact information if privileges allow
   <lookupEntity> query of IRIS for it.  To reference this registry:

   o  host-name - the
   equivalent fully qualified domain entity in name of a registrants service instance, an entity
   URI should be returned using nameserver.



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      Yields a <host> (Section 3.2.4) in the <domainReference> element of response.

   o  host-handle - the
   <domain> object.

   Searches for contacts or holders should not yield search
   continuations.

4.2 "Thin"

   When <domain> elements are returned in registry unique identifier given a result, thin registries
   should also return an entity URI to nameserver.
      Yields a <host> (Section 3.2.4) in the response.

   o  domain-name - the equivalent fully qualified name of a domain.  This a domain entity
      name as specified by RFC 1035 [12].  Yields a <domain> (Section
      3.2.2) in the registrars service instance using response.

   o  domain-handle - the <domainReference> child.
   Likewise, when registry unique identifier given a registrar's service instance returns domain.
      Yields a <domain>
   instance, it SHOULD use (Section 3.2.2) in the same element to reference response.

   o  domain-variant - the fully qualified name of a domain
   entity variant.
      This a domain name as specified by RFC 1035 [12].  Yields a
      <domain> (Section 3.2.2) in the registrant's service instance, if one is available.

   Because thin registries do not contain contact information, certain
   searches will yield nothing but search continuations.  These are



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   listed here:

   o  <findDomainsByRegistrant>

   o  <findContacts> response.

   o  entity lookups  contact-handle - the registry unique identifier given a contact.
      Yields a <contact> (Section 3.2.5) in the "contact-handle" class

   Because handles for hosts and domains can be assigned by both
   registries and registrars, entity lookups response.

   o  ipv4-address - the IPv4 address of a nameserver.  Yields a <host>
      (Section 3.2.4) in the registry response.

   o  ipv6-address - the IPv6 address of a nameserver.  Yields a <host>
      (Section 3.2.4) in the
   "host-handle" and "domain-handle" classes can yield both response.

   o  registration-authority - the name of a <result>
   derivative, registration authority.
      Yields a <registrationAuthority> (Section 3.2.6) in this the response.

   o  All names in these entity classes are case <host> and <domain> respectively, and search
   continuations. insensitive.






















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5.                       June 2003


4. Formal XML Syntax

   This registry schema is specified in the XML Schema notation.  The
   formal syntax presented here is a complete schema representation
   suitable for automated validation of an XML instance when combined
   with the formal schema syntax of IRIS.


   <?xml version="1.0"?>
   <schema xmlns="http://www.w3.org/2001/XMLSchema"
           xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
           xmlns:iris="urn:ietf:params:xml:ns:iris1"
           targetNamespace="urn:ietf:params:xml:ns:dreg1"
           elementFormDefault="qualified" >

     <import namespace="urn:ietf:params:xml:ns:iris1" />

     <annotation>
       <documentation>
         Domain registry schema
         derived from IRIS schema
       </documentation>
     </annotation>

     <!--             -->
     <!-- Query types -->
     <!--             -->

     <complexType name="listRegistrarsType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <element name="baseDomain"
               type="normalizedString" ref="dreg:baseDomain"
               minOccurs="0" maxOccurs="1" />
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="listRegistrars"
       type="dreg:listRegistrarsType"
       substitutionGroup="iris:query" />

     <complexType name="findDomainsByRegistrantType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <element ref="dreg:baseDomain"



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             <element name="baseDomain"
               type="normalizedString"                       June 2003


               minOccurs="0" maxOccurs="1" />
             <element name="field"
               type="dreg:contactSearchFieldsType"
             <choice>
               <group ref="dreg:contactSearchGroup" />
               <element name="beginsWith"
               minOccurs="0" maxOccurs="1">
               <simpleType>
                 <restriction base="token">
                   <minLength value="3"/>
                 </restriction>
               </simpleType>
             </element> name="contactHandle"
                 type="dreg:exactMatchParameter" />
             </choice>
             <element name="endsWith" name="language"
               type="language"
               minOccurs="0" maxOccurs="1">
               <simpleType>
                 <restriction base="token">
                   <minLength value="2"/>
                 </restriction>
               </simpleType>
             </element> maxOccurs="unbounded"/>
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="findDomainsByRegistrant"
       type="dreg:findDomainsByRegistrantType"
       substitutionGroup="iris:query" />

     <complexType name="findDomainsByNameType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <element name="baseDomain"
               type="normalizedString" ref="dreg:baseDomain"
               minOccurs="0" maxOccurs="1" />
             <element name="beginsWith"
               minOccurs="1" maxOccurs="1" >
               <simpleType>
                 <restriction base="token">
                   <minLength value="3"/>
                 </restriction>
               </simpleType>
             </element> name="namePart"
               type="dreg:partialMatchParameter" />
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="endsWith" name="findDomainsByName"
       type="dreg:findDomainsByNameType"
       substitutionGroup="iris:query" />

     <complexType name="findDomainsByI18NNameType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <element ref="dreg:baseDomain"
               minOccurs="0" maxOccurs="1" >
               <simpleType> />
             <element name="namePart"
               type="dreg:partialMatchParameter" />
             <element name="language"
               type="language"
               minOccurs="0" maxOccurs="unbounded"/>
           </sequence>
         </extension>



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                 <restriction base="token">
                   <minLength value="2"/>
                 </restriction>
               </simpleType>
             </element>                       June 2003


       </complexContent>
     </complexType>

     <element name="findDomainsByI18NName"
       type="dreg:findDomainsByI18NNameType"
       substitutionGroup="iris:query" />

     <complexType name="findContactsType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <group ref="dreg:contactSearchGroup" />
             <element name="language"
               type="language"
               minOccurs="0" maxOccurs="unbounded"/>
            </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="findDomainsByName"
       type="dreg:findDomainsByNameType" name="findContacts"
       type="dreg:findContactsType"
       substitutionGroup="iris:query" />

     <complexType name="findContactsType"> name="findDomainsByHostType">
       <complexContent>
         <extension base="iris:queryType">
           <sequence>
             <element name="field"
               type="dreg:contactSearchFieldsType" ref="dreg:baseDomain"
               minOccurs="0" maxOccurs="1" />
             <choice>
               <element name="hostName"
                 type="dreg:exactMatchParameter" />
               <element name="hostHandle"
                 type="dreg:exactMatchParameter" />
               <element name="ipV4Address"
                 type="dreg:exactMatchParameter" />
               <element name="ipV6Address"
                 type="dreg:exactMatchParameter" />
             </choice>
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="findDomainsByHost"
       type="dreg:findDomainsByHostType"
       substitutionGroup="iris:query" />



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     <group name="contactSearchGroup">
       <choice>
         <element name="commonName"
           type="dreg:exactOrPartialMatchParameter" />
         <element name="organization"
           type="dreg:exactOrPartialMatchParameter" />
         <element name="eMail"
           type="dreg:domainResourceParameter" />
         <element name="city"
           type="dreg:exactMatchParameter" />
         <element name="region"
           type="dreg:exactMatchParameter" />
         <element name="postalCode"
           type="dreg:exactMatchParameter" />
       </choice>
     </group>

     <complexType name="exactOrPartialMatchParameter">
       <choice>
         <group ref="dreg:partialMatchGroup" />
         <group ref="dreg:exactMatchGroup" />
       </choice>
     </complexType>

     <complexType name="exactMatchParameter">
       <group ref="dreg:exactMatchGroup" />
     </complexType>

     <complexType name="partialMatchParameter">
       <sequence>
         <group ref="dreg:partialMatchGroup" />
       </sequence>
     </complexType>

     <complexType name="domainResourceParameter" >
       <choice>
         <group ref="dreg:exactMatchGroup" />
         <element name="inDomain"
           type="token" />
       </choice>
     </complexType>

     <element name="baseDomain"
       type="normalizedString" />

     <group name="partialMatchGroup">
       <sequence>
         <element name="beginsWith"
               minOccurs="0"



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           minOccurs="1" maxOccurs="1" >
           <simpleType>
             <restriction base="token">
               <minLength value="3"/> value="1"/>
             </restriction>
           </simpleType>
         </element>
         <element name="endsWith"
           minOccurs="0" maxOccurs="1" >
           <simpleType>
             <restriction base="token">
               <minLength value="2"/> value="1"/>
             </restriction>
           </simpleType>
         </element>
       </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="findContacts"
       type="dreg:findContactsType"
       substitutionGroup="iris:query" />

     <complexType name="findDomainsByHostType">
       <complexContent>
         <extension base="iris:queryType">



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           <choice>
             <element name="hostName"
               type="normalizedString" />
             <element name="hostHandle"
               type="normalizedString" />
             <element name="ipV4Address"
               type="normalizedString" />
     </group>

     <group name="exactMatchGroup">
       <sequence>
         <element name="ipV6Address" name="exactMatch"
           type="normalizedString" />
           </choice>
         </extension>
       </complexContent>
     </complexType>

     <element name="findDomainsByHost"
       type="dreg:findDomainsByHostType"
       substitutionGroup="iris:query" />
       </sequence>
     </group>

     <!--              -->
     <!-- Result types -->
     <!--              -->

     <complexType name="domainType">
       <complexContent>
         <extension base="iris:resultType">
           <sequence>
             <element name="domainName"
               type="normalizedString" />
             <element name="domainHandle"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="nameServers"
               minOccurs="1"
               minOccurs="0" maxOccurs="1" >
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI"
                     minOccurs="0" ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>



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             <element name="registrant"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="1" />
                 </sequence>
               </complexType>
             </element>
             <element name="billingContacts"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="technicalContacts"
               minOccurs="0" maxOccurs="1" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="administrativeContacts"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="legalContacts"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="zoneContacts"
               minOccurs="0" maxOccurs="1">
               <complexType>



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             </element>                       June 2003


                 <sequence>
                   <element name="domainContacts" ref="iris:entity"
                     minOccurs="1" maxOccurs="1">
               <complexType>
                 <sequence> maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="contact" name="abuseContacts"
               minOccurs="0" maxOccurs="unbounded"> maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="role" name="securityContacts"
               minOccurs="0" maxOccurs="1">
                           <simpleType>
                             <restriction base="token">
                               <enumeration value="billing" />
                               <enumeration value="technical" />
                               <enumeration value="administrative" />
                               <enumeration value="legal" />
                               <enumeration value="zone" />
                               <enumeration value="other"
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                             </restriction>
                           </simpleType>
                         </element>
                 </sequence>
               </complexType>
             </element>
             <element name="otherContacts"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="lastContactModificationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastContactModificationBy"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>
             <element name="activationStatus"
             <choice
               minOccurs="0" maxOccurs="1">
               <simpleType>
                 <restriction base="token">
                   <enumeration value="reservedDelegation" />
                   <enumeration value="assignedAndActive" />
                   <enumeration value="assignedAndInactive" />
                   <enumeration value="assignedAndOnHold" />
               <element name="reservedDelegationStatus"



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                   <enumeration value="revoked"                       June 2003


                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
                   <enumeration value="unspecified"
               <element name="assignedAndActiveStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
                 </restriction>
               </simpleType>
             </element>
               <element name="assignedAndInactiveStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
               <element name="assignedAndOnHoldStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
               <element name="revokedStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
               <element name="unspecifiedStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
             </choice>
             <element name="delegationReference"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>
             <element name="registry"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>
             <element name="registrar"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity"
                     minOccurs="0" maxOccurs="1" />
                 </sequence>
               </complexType>
             </element>
             <element name="initialDelegationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastRenewalDateTime"
               type="dateTime"



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               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="expirationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastDelegationModificationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastDelegationModificationBy"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>
             <element name="lastVerificationDateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element ref="iris:seeAlso"
               minOccurs="0" maxOccurs="1" />
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="domain"
       type="dreg:domainType"
       substitutionGroup="iris:result" />

     <complexType name="domainVariantType">
       <complexContent>
         <extension base="iris:resultType">
           <sequence>
             <element name="domainName"
               type="normalizedString" />
             <element name="variantOf"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>
                   <element ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>



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               </complexType>
             </element>
             <element name="lastVerificationDateTime"
               type="dateTime"                       June 2003


             <choice
               minOccurs="0" maxOccurs="1" maxOccurs="1">
               <element name="blockedStatus"
                 nillable="true"
                 type="dreg:dateTimeOmissionType" />
               <sequence>
                 <element name="unblockedStatus"
                   nillable="true"
                   type="dreg:dateTimeOmissionType" />
                 <element ref="iris:seeAlso" name="registeredDomain"
                   minOccurs="0" maxOccurs="1" maxOccurs="1">
                   <complexType>
                     <sequence>
                       <element ref="iris:entity" />
                     </sequence>
                   </complexType>
                 </element>
               </sequence>
             </choice>
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="domain"
       type="dreg:domainType"
       substitutionGroup="iris:result" />

     <complexType name="hostType">
       <complexContent>
         <extension base="iris:resultType">
           <sequence>
             <element name="hostHandle"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="hostName"
               type="normalizedString" />
             <element name="ipV4Addresses"> name="ipV4Addresses"
               minOccurs="0" maxOccurs="1" >
               <complexType>
                 <sequence>
                   <element name="ipV4Address"
                     type="normalizedString"
                     minOccurs="0"
                     type="token"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="ipV6Addresses"> name="ipV6Addresses"
               minOccurs="0" maxOccurs="1">
               <complexType>
                 <sequence>



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                   <element name="ipV6Address"
                     type="normalizedString"
                     minOccurs="0"
                     type="token"
                     minOccurs="1" maxOccurs="unbounded" />
                 </sequence>
               </complexType>
             </element>
             <element name="hostContacts"> name="hostContacts"
               minOccurs="0" maxOccurs="1" >
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI"
                     minOccurs="0" ref="iris:entity"
                     minOccurs="1" maxOccurs="unbounded" />



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                 </sequence>
               </complexType>
             </element>
             <element name="createdDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastModificationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastVerificationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element ref="iris:seeAlso"
               minOccurs="0" maxOccurs="1" />
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="host"
       type="dreg:hostType"
       substitutionGroup="iris:result" />

     <complexType name="contactType">
       <complexContent>
         <extension base="iris:resultType">
           <sequence>
             <element name="contactHandle"
               type="normalizedString" />
             <element name="commonName"
               type="normalizedString" />
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1"/>



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             <element name="language"
               type="language"
               minOccurs="0" maxOccurs="1" />
             <element name="organization"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="eMail"
               type="string"
               type="dreg:stringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="2" />
             <element name="address"
               type="string"
               type="dreg:stringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="city"
               type="string"
               type="dreg:stringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="region"
               type="string"



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               type="dreg:stringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="postalCode"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="country"
               type="token"
               type="dreg:tokenOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="phone"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="fax"
               type="normalizedString"
               type="dreg:normalizedStringOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="createdDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastModificationDateTime"
               type="dateTime"
               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="lastVerificationDateTime"
               type="dateTime"



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               type="dreg:dateTimeOmissionType"
               nillable="true"
               minOccurs="0" maxOccurs="1" />
             <element name="translatedContacts"
               type="iris:seeAlsoType"
               nillable="true"
               minOccurs="0" maxOccurs="unbounded" maxOccurs="1" />
             <element ref="iris:seeAlso"
               minOccurs="0" maxOccurs="1" />
           </sequence>
         </extension>
       </complexContent>
     </complexType>

     <element name="contact"
       type="dreg:contactType"
       substitutionGroup="iris:result" />

     <simpleType name="contactSearchFieldsType">
       <restriction base="token">
         <enumeration value="contactHandle" />
         <enumeration value="commonName" />
         <enumeration value="organization" />
         <enumeration value="eMail" />
         <enumeration value="city" />
         <enumeration value="region" />
         <enumeration value="postalCode" />
         <enumeration value="country" />
       </restriction>
     </simpleType>



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     <complexType name="registrationAuthorityType">
       <complexContent>
         <extension base="iris:resultType">
           <sequence>
             <element name="serviceInstance">
               <complexType>
                 <sequence>
                   <element ref="iris:entityURI" ref="iris:entity" />
                 </sequence>
               </complexType>
             </element>
             <element name="organizationName"
               type="string"
               minOccurs="0" maxOccurs="1" />
             <element name="type"
             <choice
               minOccurs="0" maxOccurs="3">
               <simpleType>
                 <restriction base="token">
                   <enumeration value="registry" />
                   <enumeration value="registrar" />
                   <enumeration value="other" />
                 </restriction>
               </simpleType>
               <element name="registry">
                 <complexType/>
               </element>
               <element name="registrar">
                 <complexType/>
               </element>
               <element name="other">
                 <complexType/>
               </element>
             </choice>
           </sequence>
         </extension>
       </complexContent>
     </complexType>



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     <element name="registrationAuthority"
       type="dreg:registrationAuthorityType"
       substitutionGroup="iris:result" />

     <attributeGroup name="omissionAttributeGroup">
       <attribute name="private"      type="boolean" />
       <attribute name="denied"       type="boolean" />
       <attribute name="unspecified"  type="boolean" />
     </attributeGroup>

     <complexType name="dateTimeOmissionType">
       <simpleContent>
         <extension base="dateTime">
           <attributeGroup ref="dreg:omissionAttributeGroup" />
         </extension>
       </simpleContent>
     </complexType>

     <complexType name="stringOmissionType">
       <simpleContent>
         <extension base="string">
           <attributeGroup ref="dreg:omissionAttributeGroup" />
         </extension>
       </simpleContent>
     </complexType>

     <complexType name="normalizedStringOmissionType">
       <simpleContent>
         <extension base="normalizedString">
           <attributeGroup ref="dreg:omissionAttributeGroup" />
         </extension>
       </simpleContent>
     </complexType>

     <complexType name="tokenOmissionType">
       <simpleContent>
         <extension base="token">
           <attributeGroup ref="dreg:omissionAttributeGroup" />
         </extension>
       </simpleContent>
     </complexType>

     <!--             -->
     <!-- Error types -->
     <!--             -->

     <complexType name="searchTooWideType">
       <complexContent>
         <extension base="iris:codeType">
           <sequence>

     <element name="useField"
               type="dreg:contactSearchFieldsType"
               minOccurs="0" maxOccurs="unbounded" />
           </sequence>
         </extension>
       </complexContent>
     </complexType> name="searchTooWide"
       type="iris:codeType"



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     <element name="searchTooWide"
       type="dreg:searchTooWideType"                       June 2003


       substitutionGroup="iris:genericCode" />

     <!--              -->
     <!-- Global types -->
     <!--              -->

     <simpleType name="entityClassType">
       <restriction base="iris:entityClassType">
         <enumeration value="domain-name" />
         <enumeration value="domain-handle" />
         <enumeration value="host-name" />
         <enumeration value="host-handle" />
         <enumeration value="contact-handle" />
         <enumeration value="ipv4-address" />
         <enumeration value="ipv6-address" />
       </restriction>
     </simpleType>

     <element name="entityClass"
       type="dreg:entityClassType"
       substitutionGroup="iris:entityClass" name="languageNotSupported"
       type="iris:codeType"
       substitutionGroup="iris:genericCode" />

   </schema>

                                Figure 1










































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6.                       June 2003


5. BEEP Transport Compliance

   IRIS allows several extensions of the core capabilities.  This
   section outlines those extensions allowable by IRIS-BEEP [6].

6.1

5.1 Message Pattern

   This registry type uses the default message pattern as described in
   IRIS-BEEP [6].

6.2 Authority

5.2 Server Authentication

   This registry type uses the default server authentication method as
   described in IRIS-BEEP [6].





































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6. URI Resolution

   The authority resolution of an IRIS URI for this registry type is
   similar to the default resolution spelled out in IRIS-BEEP [6]. IRIS [5].  The
   default authority resolution process allows for the authority to be

   o  a domain name

   o  a domain name accompanied by a port number

   o  an IP address

   o  an IP address accompanied by a port number

   The resolution process for this registry only differs if the
   authority is only a domain name (i.e.  without the port number).  The
   process for this condition is as follows:

   1.  The SRV algorithm is used with a service parameter of "iris" and
       a protocol parameter of "tcp" to determine

   1.  The IRIS [5] default resolution process is tried on the IP/TCP addressing
       information. domain
       name (e.g.  "example.com" ).

   2.  If no SRV records are found (e.g.  for "_iris._tcp.example.com"), found, then the left-most component of the
       domain name is removed, and the first step is repeated again
       (e.g.  for "_iris._tcp.com").  "com" ).

   3.  If all the components of the domain name are removed and no SRV
       records are found, then the DNS is queried for the A records
       corresponding to the original domain name and the port number used is
       the well-known port assigned by the IANA for IRIS using
       BEEP.


6.3 Server Authentication

   This the default protocol of IRIS.

   The application service label associated with this registry type uses MUST
   be "XP-DN".  This label has no particular significance other than
   "XP" is short for "CRISP" and "DN" is short for "Domain Name".
   Because the default server authentication method as
   described in IRIS-BEEP [6]. service field, of which this label is just one of many
   components, is limited to 32 characters, this label is purposefully
   meaningful but short.















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7. Internationalization Considerations

   Implementers should be aware of considerations for
   internationalization in IRIS [5].

   In addition, this document specifies the lookup of domain names.
   Current efforts are under way names, both
   the traditional ASCII form and the IDN form.  In addition, the social
   data associated with contacts may also be in Unicode.  Server
   implementations should take care with normalization processes of
   Unicode during searches.  The <language> element is provided in
   queries that have potential to provide "internationalized" domain
   names.  This document does not yet strive traverse such data.  Clients should
   use these elements to indicate to make distinctions
   between the two.  However, because server the target languages
   desired, and servers should use these elements to better enable
   normalization and search processes.

   Clients needing to localize the data tags in this protocol should
   take note that localization is only needed on the names of XML
   elements and attributes.  The schema for this registry has been
   designed so that clients need not interpret the content of elements
   or attributes for localization.

   Clients should also make use of the <language> elements provided in
   many of the results.  Results containing data that may be specified in UTF-8, it
   is possible Unicode
   are accompanied by these elements in order to support internationalization efforts for domain names. aid better presentation
   of the data to the user.


























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8. IANA Considerations

   The following URN will need to be registered with IANA according to
   the IANA considerations defined in IRIS [5]:

      urn:ietf:params:xml:ns:dreg1

   The following NAPSTR application service label will need to be
   registered with IANA according to the IANA considerations defined in
   IRIS [5]:

      XP-DN







































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9. Security Considerations

   This document lays out no new considerations for security precautions
   beyond that specified in IRIS [5].















































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References

   [1]   World Wide Web Consortium, "Extensible Markup Language (XML)
         1.0", W3C XML, February 1998, <http://www.w3.org/TR/1998/REC-
         xml-19980210>. <http://www.w3.org/TR/1998/
         REC-xml-19980210>.

   [2]   World Wide Web Consortium, "Namespaces in XML", W3C XML
         Namespaces, January 1999, <http://www.w3.org/TR/1999/REC-xml-
         names-19990114>. <http://www.w3.org/TR/1999/
         REC-xml-names-19990114>.

   [3]   World Wide Web Consortium, "XML Schema Part 2: Datatypes", W3C
         XML Schema, October 2000, <http://www.w3.org/TR/2001/REC-
         xmlschema-2-20010502/>. <http://www.w3.org/TR/2001/
         REC-xmlschema-2-20010502/>.

   [4]   World Wide Web Consortium, "XML Schema Part 1: Structures", W3C
         XML Schema, October 2000, <http://www.w3.org/TR/2001/REC-
         xmlschema-1-20010502/>. <http://www.w3.org/TR/2001/
         REC-xmlschema-1-20010502/>.

   [5]   Newton, A., "Internet Registry Information Service", draft-
         ietf-crisp-iris-core-01
         draft-ietf-crisp-iris-core-01 (work in progress), November
         2002.

   [6]   Newton, A., "Internet Registry Information Service (IRIS) over
         Blocks Exstensible Exchange Protocol (BEEP)", draft-ietf-crisp-
         iris-beep-01
         draft-ietf-crisp-iris-beep-01 (work in progress), November
         2002.

   [7]   Hinden, R. and S. Deering, "IP Version 6 Addressing
         Architecture", RFC 2373, July 1998.

   [8]   Postel, J., "Internet Protocol", STD 5, RFC 791, September
         1981.

   [9]   Reynolds, J. and J. Postel, "ASSIGNED NUMBERS", RFC 1700, STD
         2, October 1994.

   [10]  Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA
         Considerations Section in RFCs", RFC 2434, BCP 26, October
         1998.

   [11]  Newton, A., "Cross Registry Internet Service Protocol (CRISP)
         Requirements", draft-ietf-crisp-requirements-00 (work in
         progress), August 2002.

   [12]  Mockapetris, P., "Domain names - implementation and
         specification", STD 13, RFC 1035, November 1987.

   [13]  Bradner, S., "Key words for use in RFCs to Indicate Requirement
         Levels", RFC 2119, BCP 14, March 1997.



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         Levels", RFC 2119, BCP 14, March 1997.


Author's Address

   Andrew L. Newton
   VeriSign, Inc.
   21345 Ridgetop Circle
   Sterling, VA  20166
   USA

   Phone: +1 703 948 3382
   EMail: anewton@verisignlabs.com; anewton@ecotroph.net
   URI:   http://www.verisignlabs.com/





































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Appendix A. An Example Request and Response

   The following is an example of an IRIS request and response using
   this registry schema.

   ---------------------------------------------------------------------

    This XML instance is a request to search for domains by the
   registrant's name.


   <?xml version="1.0"?>
   <request xmlns="urn:ietf:params:xml:ns:iris1"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="urn:ietf:params:xml:ns:iris1 iris.xsd" >

     <searchSet>

       <dreg:findDomainsByRegistrant
         xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
         xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd" >
         <dreg:baseDomain>com</dreg:baseDomain>
         <dreg:field>commonName</dreg:field>
         <dreg:commonName>
           <dreg:beginsWith>
             The Cobbler Shoppe
           </dreg:beginsWith>
         </dreg:commonName>
       </dreg:findDomainsByRegistrant>

       <bag>
          AAAAB3NzaC1yc2EAAAABIwAAAIEA0ddD+W3Agl0Lel98G1r77fZ
          c3nBl8CHdkmKuVGUy/ijmvdO5QxuSlU0R4BoCLZk/Sob22RApTn
          T+ROMbXFQBrxGH08daAOy98WqpfAutWJri61JLpubIbaqhGyB48
          Qt69V6OhYfFsJjvoNEOh1k2dgzXhSlzP3OMVSKRlBzGcO8=
       </bag>

     </searchSet>

   </request>


                       Figure 2: dreg-request.xml

   ---------------------------------------------------------------------

   ---------------------------------------------------------------------

    This XML instance is a response from Figure 2.


   <?xml version="1.0"?>
   <response xmlns="urn:ietf:params:xml:ns:iris1"
             xmlns:iris="urn:ietf:params:xml:ns:iris1"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="urn:ietf:params:xml:ns:iris1 iris.xsd" >

     <resultSet>
       <answer>



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             xsi:schemaLocation="urn:ietf:params:xml:ns:iris1 iris.xsd" >

     <resultSet>

       <answer>

         <dreg:domain
           xmlns="urn:ietf:params:xml:ns:dreg1"
           xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
           xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd"
           thisEntityURI="iris://com/dreg1/domainHandle/tcs-com-1">
           authority="com" registryType="dreg1"
           entityClass="domain-handle" entityName="tcs-com-1" >
           <domainName>thecobblershoppe.com</domainName>
           <nameServers>
             <iris:entityURI>
               iris://com/dreg1/host-handle/research7
             </iris:entityURI>
             <iris:entityURI>
               iris://com/dreg1/host-handle/nso1184
             </iris:entityURI>
             <iris:entity
               authority="com" registryType="dreg1"
               entityClass="host-handle" entityName="research7" />
             <iris:entity
               authority="com" registryType="dreg1"
               entityClass="host-handle" entityName="nsol184" />
           </nameServers>
           <registrant>
             <iris:entityURI
               displayName="Bill Eckels"
             <iris:entity
               authority="com" registryType="dreg1"
               entityClass="contact-handle" entityName="beb140">
               <iris:displayName language="en">
               iris://com/dreg1/contact-handle/beb140
             </iris:entityURI>
                 Bill Eckels
               </iris:displayName>
             </iris:entity>
           </registrant>
           <domainContacts>
             <contact>
               <iris:entityURI
                 displayName="Mark Kosters"
           <technicalContacts>
             <iris:entity
               bagRef="x1"
               authority="com" registryType="dreg1"
               entityClass="contact-handle" entityName="mak21">
               <iris:displayName language="en">
                 iris://com/dreg1/contact-handle/mak21
               </iris:entityURI>
               <role>technical</role>
             </contact>
           </domainContacts>
                 Mark Kosters
               </iris:displayName>
             </iris:entity>
           </technicalContacts>
           <assignedAndActiveStatus denied="true" xsi:nil="true" />
           <iris:seeAlso>
             <iris:entityURI>
               iris://com/dreg1/service-definition/notice
             </iris:entityURI>
             <iris:entity
               authority="com" registryType="dreg1"
               entityClass="service-definition" entityName="notice" />
           </iris:seeAlso>
         </dreg:domain>




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       </answer>

       <additional>

         <dreg:contact
           xmlns="urn:ietf:params:xml:ns:dreg1"
           xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
           xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd"
           thisEntityURI="iris://com/dreg1/contact-handle/beb140">
           authority="com" registryType="dreg1"
           entityClass="contact-handle" entityName="beb140" >
           <contactHandle>beb140</contactHandle>
           <commonName>
             Bill Eckels
           </commonName>
           <organization>
             The Cobbler Shoppe



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           </organization>
           <eMail>
             bille@bjmk.com
           </eMail>
           <eMail private="true" xsi:nil="true" />
           <address>
             21 North Main Street
           </address>
           <city>
             Britt
           </city>
           <region>
             IA
           </region>
           <postalCode>
             50423
           </postalCode>
           <country>
             US
           </country>
           <phone>
             515-843-3521
           </phone>
         </dreg:contact>

         <simpleEntity
           thisEntityURI="iris://com/dreg1/service-definition/notice"
           authority="com" registryType="dreg1"
           entityClass="service-definition" entityName="notice" >
           <property name="legal" language="en">
             It is illegal to use information from this service
             for the purposes of sending unsolicited bulk email.
           </property>
         </simpleEntity>

       </additional>



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       <bags>
         <bag id="x1">
            AAAAB3NzaC1yc2EAAAABIwAAAIEA0ddD+W3Agl0Lel98G1r77fZ
            c3nBl8CHdkmKuVGUy/ijmvdO5QxuSlU0R4BoCLZk/Sob22RApTn
            T+ROMbXFQBrxGH08daAOy98WqpfAutWJri61JLpubIbaqhGyB48
            Qt69V6OhYfFsJjvoNEOh1k2dgzXhSlzP3OMVSKRlBzGcO8=
         </bag>
       </bags>

     </resultSet>

   </response>

                      Figure 3: dreg-response.xml

   ---------------------------------------------------------------------





































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Appendix B. An Example Database Serialization

   The following is an example of serializing domain data.

   ---------------------------------------------------------------------

   This example shows the serialization of a domain, a host, and some
   named queries.


   <iris:serialization
     xmlns:iris="urn:ietf:params:xml:ns:iris1"
     xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="urn:ietf:params:xml:ns:iris1 iris.xsd" iris.xsd
       urn:ietf:params:xml:ns:dreg1 dreg.xsd" >

     <dreg:domain
       xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
       xmlns="urn:ietf:params:xml:ns:dreg1"
       xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd"
       thisEntityURI="iris://com/dreg1/domain-handle/tcs-com-1"
       authority="com" registryType="dreg1"
       entityClass="domain-handle" entityName="tcs-com-1" >
       <domainName>thecobblershoppe.com</domainName>
       <nameServers>
         <iris:serializedEntityURI>
           iris://com/dreg1/host-handle/research7
         </iris:serializedEntityURI>
         <iris:serializedEntityURI>
           iris://com/dreg1/host-handle/nso1184
         </iris:serializedEntityURI>
         <iris:serializedEntity
           authority="com" registryType="dreg1"
           entityClass="host-handle" entityName="research7" />
         <iris:serializedEntity
           authority="com" registryType="dreg1"
           entityClass="host-handle" entityName="nsol184" />
       </nameServers>
       <registrant>
         <iris:entityURI>
           iris://net/dreg1/contact-handle/beb140
         </iris:entityURI>
         <iris:entity
           authority="net" registryType="dreg1"
           entityClass="contact-handle" entityName="beb140" />
       </registrant>
       <domainContacts>
         <contact>
           <iris:entityURI
             displayName="Mark Kosters"
       <technicalContacts>
         <iris:entity
           authority="net" registryType="dreg1"
           entityClass="contact-handle"
           entityName="mak21" >
           <iris:displayName language="en">
             iris://net/dreg1/contact-handle/mak21
           </iris:entityURI>
           <role>technical</role>
         </contact>
       </domainContacts>
             Mark Kosters
           </iris:displayName>
         </iris:entity>
       </technicalContacts>
     </dreg:domain>

     <dreg:host
       xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
       xmlns="urn:ietf:params:xml:ns:dreg1"
       authority="com" registryType="dreg1"



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       xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd"
       thisEntityURI="iris://com/dreg1/host-handle/nsol184"                       June 2003


       entityClass="host-handle" entityName="nsol184" >
       <hostHandle>nsol184</hostHandle>
       <hostName>ns1.netsol.com</hostName>
       <ipV4Addresses>
         <ipV4Address>216.168.224.200</ipV4Address>
       </ipV4Addresses>
       <ipV6Addresses>
       </ipV6Addresses>
       <hostContacts>
         <iris:serializedEntityURI
           displayName="David Blacka"
         <iris:serializedEntity
           authority="com" registryType="dreg1"
           entityClass="contact-handle"
           entityName="dblacka" >
           <iris:displayName language="en">
           iris://com/dreg1/contact-handle/dblacka
         </iris:serializedEntityURI>
             David Blacka
           </iris:displayName>
         </iris:serializedEntity>
       </hostContacts>
     </dreg:host>

     <iris:searchContinuation
       thisEntityURI="iris://com/dreg1/contact-handle/dblacka">
       authority="com" registryType="dreg1"
       entityClass="contact-handle" entityName="dblacka" >
       <iris:authority> net </iris:authority>
       <iris:searchSet>

         <iris:lookupEntity registryID="dreg1">
           <iris:entityName>dblacka</iris:entityName>
           <dreg:entityClass
             xmlns:dreg="urn:ietf:params:xml:ns:dreg1"
             xsi:schemaLocation="urn:ietf:params:xml:ns:dreg1 dreg.xsd" >
             contact-handle
           </dreg:entityClass>
         </iris:lookupEntity>

       </iris:searchSet>

       <dreg:listRegistrars>
         <dreg:baseDomain>com</dreg:baseDomain>
       </dreg:listRegistrars>

     </iris:searchContinuation>

     <iris:serializedNamedQuery
       registryID="dreg1"
       registryType="dreg1" entityClass="named-query"
       entityName="my-servers" >
       <iris:resultSet>
         <iris:answer>

           <iris:serializedEntityURI>
             iris://verisignlabs.com/dreg1/host-handle/nsol184
           </iris:serializedEntityURI>

           <iris:serializedEntityURI>
             iris://verisignlabs.com/dreg1/host-handle/research7
           </iris:serializedEntityURI>

           <iris:serializedEntityURI>

           <iris:serializedEntity
             authority="verisignlabs.com" registryType="dreg1"
             entityClass="host-handle" entityName="nsol184" />

           <iris:serializedEntity
             authority="verisignlabs.com" registryType="dreg1"
             entityClass="host-handle" entityName="research7" />

           <iris:serializedEntity
             authority="verisignlabs.com" registryType="dreg1"
             entityClass="host-handle" entityName="scooter" />

         </iris:answer>



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             iris://verisignlabs.com/dreg1/host-handle/scooter
           </iris:serializedEntityURI>

         </iris:answer>                       June 2003


       </iris:resultSet>
     </iris:serializedNamedQuery>

   </iris:serialization>


                    Figure 4: dreg-serialization.xml

   ---------------------------------------------------------------------












































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Appendix C. Acknowledgements

   Many of the concepts concerning the use of SRV records for step-wise
   refinement towards finding authoritative servers and many of the
   details of result objects in this draft were originally created by
   Eric A.  Hall in his memos regarding the use of LDAP to satisfy the
   CRISP requirements.  These concepts have contributed significantly to
   the development of this protocol.











































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Intellectual Property Statement

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   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION



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   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.











































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----