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Global Policy Proposal for Autonomous System Numbers — Background Report

Updated 3 March 2008
10 January 2008


The development of Global Internet Number Resource Policies is the subject of an MoU between ASO/NRO and ICANN. There are also specific ICANN Board Procedures for handling global policy proposals in this context.

The Board procedures also state that the Board can request ICANN staff to undertake an "early awareness" tracking of proposals for global policies under development in the addressing community. At its meeting on 20 November 2007, the Board resolved to request such tracking of the development of a global policy proposal for allocation of Autonomous System Numbers, or ASNs, that is already well advanced towards adoption in the Regional Internet Registries, or RIRs. The status overview presented below is compiled in response to this request and will be timely updated as developments proceed, for information to ICANN entities and the wider community.

Status Overview

The table below indicates the current status within each RIR for the proposed Global Policy for ASNs. Hyperlinks are included for easy access.

The proposal was originally presented at the RIPE-54 meeting in March 2007. It formalizes the current procedure and gives a policy basis for the transition from 2-byte (16 bits) to 4-byte (32 bits) ASNs. The proposal has been introduced in all RIRs, following their respective policy development processes, and has now been adopted by all RIRs. The proposal will next be handled by the NRO EC and the ASO AC according to their procedures before being submitted to the ICANN Board for ratification.

The proposal has been formally recognized by the ASO AC as a global policy proposal in the sense of the ASO MoU, i.e. focusing on address allocation from IANA to the RIRs.







Proposal Introduced

20 Aug 2007


23 July 2007


28 Aug 2007 prop 2007-19

15 May 2007


1 May 2007 prop 2007-4

Discussion list

Resource Policy Discussion List


Public Policy Mailing List

Politicas – Policy Mailing List

Address Policy WG

Public Forum

AfriNIC 7

23 - 28 Sept 2007

- Slides

APNIC 24 29 Aug – 7 Sept 2007

- Slides



17-19 Oct 2007

- Slides

LACNIC X 22-25 May 2007

- Slides



7-11 May 2007

- Slides


Final Call for Comments

2 - 17 Oct 2007

25 Sept – 23 Nov 2007

23 Oct - 6 Nov 2007

13 June - 28 July 2007


17 July – 14 August 2007

Next Public Forum (N/A - this stage is passed for all)






RIR Board Endorsement

Adopted by the AfriNIC Board on 30 January 2008

Endorsed by APNIC Executive Council on 13 Dec 2007

Adopted by ARIN Board of Trustees on 11 Dec 2007

Ratified by LACNIC Board on 5 Dec 2007

Final adoption by consensus on 5 September 2007.

Link to document

Proposal afpol-asn200708


Policy proposal 2007-19

- In English

- In Spanish

- In Portuguese


Policy document RIPE-416




Link to Policy Development Process

Policy Development Process

Policy Development Process

Internet Resource Policy Evaluation


Policy Development Process

Policy Development Process







Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."