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ICANN Proposal to Perform IANA Functions Now Posted

The Internet Corporation for Assigned Names and Numbers posted a redacted version of its 31 May 2012 proposal to provide the Internet Assigned Numbers Authority (IANA) functions. The U.S. Department of Commerce, National Telecommunications and Information Administration awarded the contract to ICANN on 2 July 2012. The contract incorporates by reference the ICANN proposal and two responses to requests for additional information.

The original proposal is organized into two volumes: Volume I includes the technical and management approaches, information on past performance and documentation demonstrating fulfillment of mandatory factors spelled out in the solicitation. Because of its size, Volume I has been saved into three separate PDFs:

Volume II [PDF, 2.98 MB] includes financial information and project funding strategy. Also posted are two responses to requests for additional information:

ICANN staff made three redactions. First, we redacted from the security section confidential information about ICANN's internal networks. Second, we redacted Appendix D "IANA Data Classification Standards" from Volume I, as it is still in draft form and proceeding through internal review. Finally, in our response to a request for additional information, we redacted the portion of the subject line of the letter that stated, "Confidential and Business Proprietary" as this statement is no longer applicable.

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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"""" is not an IDN."