Internet-Draft R. Housley Intended Status: Informational Vigil Security Expires: 7 August 2014 7 February 2014 Internet Numbers Registries Abstract RFC 7020 provides information about the Internet Numbers Registry System and how it is used in the distribution of autonomous system (AS) numbers and globally unique unicast Internet Protocol (IP) address space. This companion document identifies the IANA registries that are part of the Internet Numbers Registry System at this time. Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. 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 are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference 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/1id-abstracts.html The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html Copyright and License Notice Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved. Housley [Page 1] Internet Numbers Registries February 2014 This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://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. 1. Introduction In accordance with the IETF-IANA Memorandum of Understanding [RFC2860], RFC 7020 [RFC7020] provides information about the Internet Numbers Registry System and how it is used in the distribution of autonomous system (AS) numbers and globally unique unicast Internet Protocol (IP) address space. This companion document identifies the IANA registries that are part of the Internet Numbers Registry System at this time. 2. Internet Numbers Registries Three IANA registries are associated with the Internet Numbers Registry System: AS Numbers, unicast IPv4 Addresses, and unicast IPv6 Addresses. However, in each case, there are special-purpose values, and those special-purpose values are outside the Internet Numbers Registry System. 2.1. Autonomous System Numbers For historical reasons, there are 16-bit AS numbers and 32-bit AS numbers. However, the 16-bit AS numbers are really just zero through 65535 of the 32-bit AS number space. The allocation and registration functions for all non-reserved AS numbers are handled by the Internet Numbers Registry System in accordance with policies developed by the Regional Internet Registries (RIRs) public policy development processes. Some special-purpose AS numbers have been reserved. Section 3 of this document establishes an IANA registry for special-purpose AS Numbers that have already been reserved. Future additions to this registry can be made through "IETF Review" as defined in [RFC5226]. Once a future reservation is approved, it is recorded in the special- purpose AS numbers registry with a reference to the IESG-approved RFC that documents the reservation. Housley [Page 2] Internet Numbers Registries February 2014 2.2. IPv4 Addresses The allocation and registration functions for all non-reserved globally unique unicast IPv4 addresses are handled by the Internet Numbers Registry System in accordance with policies developed by the Regional Internet Registries (RIRs) public policy development processes. Reservations of special-purpose IPv4 addresses can be found in the IANA registry [IANA-IPv4-Reg]. Future additions to this registry can be made through "IETF Review" as defined in [RFC5226]. Once a future reservation is approved, it is recorded in the special-purpose IPv4 address registry with a reference to the IESG-approved RFC that documents the reservation. 2.3. IPv6 Addresses The vast bulk of the IPv6 address space (approximately 7/8ths of the whole address space) is reserved by the IETF [RFC3513], with the expectation that further assignment of globally unique unicast address space will be made from this reserved space in accordance with future needs. The allocation and registration functions for all non-reserved globally unique unicast IPv6 addresses are handled by the Internet Numbers Registry System in accordance with policies developed by the Regional Internet Registries (RIRs) public policy development processes. Reservations of special-purpose IPv6 addresses can be found in the IANA registry [IANA-IPv6-Reg]. Future additions to this registry can be made through "IETF Review" as defined in [RFC5226]. Once a future reservation is approved, it is recorded in the special-purpose IPv6 address registry with a reference to the IESG-approved RFC that documents the reservation. 3. IANA Considerations Please establish an IANA registry for special-purpose AS numbers. Future additions to this registry can be made through "IETF Review" as defined in [RFC5226]. At this time, the special-purpose AS numbers are: Housley [Page 3] Internet Numbers Registries February 2014 AS Numbers Reason for Reservation --------------------- ------------------------------------------- 0 Reserved by [draft-ietf-idr-as0] 23456 AS_TRANS; reserved by [RFC6793] 64496-64511 For documentation and sample code; reserved by [RFC5398] 64512-65534 For private use; reserved by [RFC6996] 65535 Reserved by [RFC1930] 65536-65551 For documentation and sample code; reserved by [RFC5398] 4200000000-4294967294 For private use; reserved by [RFC6996] 4294967295 Reserved by [draft-ietf-idr-last-as-reservation] 4. Security Considerations This document identifies the IANA registries that are part of the Internet Numbers Registry System at this time. It does not change the security posture of the Internet in any way. Network operators should take care that special-purpose numbers and addresses are used on the public Internet in a manner that is consistent with their reserved purpose. 5. References 5.1. Normative References [RFC2860] Carpenter, B., Baker, F., and M. Roberts, "Memorandum of Understanding Concerning the Technical Work of the Internet Assigned Numbers Authority", RFC 2860, June 2000. [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008. [RFC7020] Housley, R., Curran, J., Huston, G., and D. Conrad, "The Internet Numbers Registry System", RFC 7020, August 2013. 5.2. Informative References [draft-ietf-idr-as0] Kumari, W., R. Bush, H. Schiller, and K. Patel, "Codification of AS 0 processing", work-in-progress, August 2012. [draft-ietf-idr-last-as-reservation] Haas, J., and J. Mitchell, "Reservation of Last Autonomous System (AS) Numbers", work- in-progress, October 2013. Housley [Page 4] Internet Numbers Registries February 2014 [IANA-IPv4-Reg] http://www.iana.org/assignments/iana-ipv4-special- registry/iana-ipv4-special-registry.xml [IANA-IPv6-Reg] http://www.iana.org/assignments/iana-ipv6-special- registry/iana-ipv6-special-registry.xml [RFC1930] Hawkinson, J. and T. Bates, "Guidelines for creation, selection, and registration of an Autonomous System (AS)", BCP 6, RFC 1930, March 1996. [RFC3513] Hinden, R. and S. Deering, "Internet Protocol Version 6 (IPv6) Addressing Architecture", RFC 3513, April 2003. [RFC5398] Huston, G., "Autonomous System (AS) Number Reservation for Documentation Use", RFC 5398, December 2008. [RFC6793] Vohra, Q. and E. Chen, "BGP Support for Four-Octet Autonomous System (AS) Number Space", RFC 6793, December 2012. [RFC6996] Mitchell, J., "Autonomous System (AS) Reservation for Private Use", BCP 6, RFC 6996, July 2013. Acknowledgements Many thanks to Jari Arkko, Scott Bradner, Brian Carpenter, David Conrad, John Curran, David Farmer, Adrian Farrel, Stephen Farrell, Brian Haberman, Geoff Huston, George Michaelson, S. Moonesamy, and Thomas Narten for their insightful review and comment. Author's Addresses Russell Housley Vigil Security, LLC 918 Spring Knoll Drive Herndon, VA 20170 USA EMail: housley@vigilsec.com Housley [Page 5]