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SSAC Review – Draft Working Group Report

Open: 5 October 09
Closed: 4 November 09 Extended to 22 November 09

Explanation/Background: The Board appointed JAS Communications as the consultants for the independent review of the Security and Stability Advisory Committee -SSAC. JAS released their draft Final Report [PDF, 673 KB] in February 2009 for presentation and discussion with the community at the ICANN meeting in Mexico City.

Comments received at the presentation and during the following public consultation were addressed by consultants in the final version of their review report [PDF, 673 KB].

The SSAC review WG engaged then in an extensive round of consultation with the SSAC community –which released a structured document providing inputs to the work of the WG- and with the public at large, through a public consultation process.

Based on its analysis of the available evidence and on the numerous comments received, the SSAC review WG releases now its draft report [PDF, 208 KB] for presentation in Seoul and public comments. The report will be finalized for Board action after closure of the public consultation phase.

Staff member responsible: Marco Lorenzoni

Announcement | Comments | Summary/analysis of comments

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."