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Global Policy for Autonomous System Numbers

The ICANN Board Executive Committee, on behalf of the ICANN Board, has ratified the Proposed Global Policy for Autonomous System Numbers, as sent by the Address Supporting Organization (ASO) Council to the ICANN Board on 22 July 2010. The proposal was posted for public comment from 23 July 2010 through 13 August 2010. No comments stating opposition to the Proposed Global Policy were received. The Global Policy modifies the existing Global Policy for Autonomous System Numbers by extending the period during which the RIRs can operate two separate pools of numbers until 31 December 2010, from the 31 December 2009 date stated in the prior version of the Global Policy. An Autonomous System Number (ASN) is a number used to uniquely identify a network connected to more than one other network that also controls its own routing policy. The Global Policy supports the introduction of 32-bit ASNs with a timeline during which RIRs can operate distinct pools of 16-bit and 32-bit ASNs. ICANN staff will be taking all necessary steps to implement the Global Policy.


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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""icann.org"" is not an IDN."