Registration Data Access Protocol (RDAP) Object Tagging
RFC 8521

Document Type RFC - Best Current Practice (November 2018; No errata)
Updates RFC 7484
Also known as BCP 221
Last updated 2018-11-19
Replaces draft-hollenbeck-regext-rdap-object-tag
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd James Gould
Shepherd write-up Show (last changed 2018-05-25)
IESG IESG state RFC 8521 (Best Current Practice)
Consensus Boilerplate Yes
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Responsible AD Adam Roach
Send notices to James Gould <jgould@verisign.com>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                     S. Hollenbeck
Request for Comments: 8521                                 Verisign Labs
BCP: 221                                                       A. Newton
Updates: 7484                                                       ARIN
Category: Best Current Practice                            November 2018
ISSN: 2070-1721

        Registration Data Access Protocol (RDAP) Object Tagging

Abstract

   The Registration Data Access Protocol (RDAP) includes a method that
   can be used to identify the authoritative server for processing
   domain name, IP address, and autonomous system number queries.  The
   method does not describe how to identify the authoritative server for
   processing other RDAP query types, such as entity queries.  This
   limitation exists because the identifiers associated with these query
   types are typically unstructured.  This document updates RFC 7484 by
   describing an operational practice that can be used to add structure
   to RDAP identifiers and that makes it possible to identify the
   authoritative server for additional RDAP queries.

Status of This Memo

   This memo documents an Internet Best Current Practice.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   BCPs is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8521.

Hollenbeck & Newton       Best Current Practice                 [Page 1]
RFC 8521                   RDAP Object Tagging             November 2018

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Object Naming Practice  . . . . . . . . . . . . . . . . . . .   3
   3.  Bootstrap Service Registry for Provider Object Tags . . . . .   9
     3.1.  Registration Procedure  . . . . . . . . . . . . . . . . .  10
   4.  RDAP Conformance  . . . . . . . . . . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     5.1.  Bootstrap Service Registry Structure  . . . . . . . . . .  11
     5.2.  RDAP Extensions Registry  . . . . . . . . . . . . . . . .  11
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

Hollenbeck & Newton       Best Current Practice                 [Page 2]
RFC 8521                   RDAP Object Tagging             November 2018

1.  Introduction

   The Registration Data Access Protocol (RDAP) includes a method
   [RFC7484] that can be used to identify the authoritative server for
   processing domain name, IP address, and Autonomous System Number
   (ASN) queries.  This method works because each of these data elements
   is structured in a way that facilitates automated parsing of the
   element and association of the data element with a particular RDAP
   service provider.  For example, domain names include labels (such as
   "com", "net", and "org") that are associated with specific service
   providers.

   As noted in Section 9 of RFC 7484 [RFC7484], the method does not
   describe how to identify the authoritative server for processing
   entity queries, name server queries, help queries, or queries using
   certain search patterns.  This limitation exists because the
   identifiers bound to these queries are typically not structured in a
   way that makes it easy to associate an identifier with a specific
   service provider.  This document describes an operational practice
   that can be used to add structure to RDAP identifiers and makes it
   possible to identify the authoritative server for additional RDAP
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