Uniform Resource Name (URN) Namespace Registration Transition
RFC 8254

Document Type RFC - Proposed Standard (October 2017; No errata)
Obsoletes RFC 3044, RFC 3187
Last updated 2017-10-20
Stream IETF
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Stream WG state Submitted to IESG for Publication (wg milestone: May 2017 - WGLC on URN Namespac... )
Document shepherd Barry Leiba
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Send notices to Barry Leiba <barryleiba@computer.org>
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Internet Engineering Task Force (IETF)                        J. Klensin
Request for Comments: 8254
Obsoletes: 3044, 3187                                          J. Hakala
Category: Standards Track                The National Library of Finland
ISSN: 2070-1721                                             October 2017

     Uniform Resource Name (URN) Namespace Registration Transition

Abstract

   The original registration procedure for formal Uniform Resource Name
   (URN) namespaces required IETF Consensus.  That requirement
   discouraged some registrations and increased the risk for problems
   that could occur as a result.  The requirements have now been changed
   by RFC 8141, which adopts a different model, focusing on encouraging
   registration and publication of information for all appropriate
   namespaces.  This document clarifies the status of relevant older
   RFCs and confirms and documents advice to IANA about selected
   existing registrations.  This document also obsoletes RFCs 3044 and
   3187 and moves them to Historic status.  These RFCs describe the ISSN
   and ISBN namespaces, which are now outdated because the descriptions
   reside in registration templates.

Status of This Memo

   This is an Internet Standards Track document.

   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
   Internet Standards 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/rfc8254.

Klensin & Hakala             Standards Track                    [Page 1]
RFC 8254               URN Registration Transition          October 2017

Copyright Notice

   Copyright (c) 2017 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.  Obsoleting Older Registration RFCs for ISSNs and ISBNs  . . .   4
     2.1.  ISBN URN Changes  . . . . . . . . . . . . . . . . . . . .   4
     2.2.  ISSN URN Changes  . . . . . . . . . . . . . . . . . . . .   4
   3.  The Older Registration RFC for NBNs . . . . . . . . . . . . .   5
   4.  Other Existing URN Registrations and RFCs . . . . . . . . . .   5
   5.  Registration Examples . . . . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   8
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

Klensin & Hakala             Standards Track                    [Page 2]
RFC 8254               URN Registration Transition          October 2017

1.  Introduction

   As a part of the initial development of the Uniform Resource Name
   (URN) system in the late 1990s, the IETF URN Working Group agreed
   that it was important to demonstrate that the URN syntax could
   accommodate existing identifier systems.  RFC 2288 [RFC2288] showed
   the feasibility of using International Standard Book Number (ISBN),
   International Standard Serial Number (ISSN), and Serial Item and
   Contribution Identifier (SICI) [ANSI-SICI] as URNs; however, it did
   not formally register corresponding URN namespaces.  This was in part
   due to the still-evolving process to formalize criteria for namespace
   definition documents and registration, consolidated later by the IETF
   into successive Namespace Definition Mechanism documents [RFC2611]
   [RFC3406].

   URN namespaces were subsequently registered for ISBN [RFC3187] and
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