Skip to main content
Resources

Board Review – Working Group Interim Report

Open: 3 March 09
Closed: 17 April 09

Explanation: ICANN appointed the Boston Consulting Group/Colin Carter & Associates to perform the external review of its Board of Directors; their review report was presented during a public workshop at the Cairo meeting. A public comment period followed and comments received can be viewed at http://forum.icann.org/lists/board-review-report/.

The Board review WG, considering the Independent Reviewer’s final report, Board input, and comments from stakeholders and the public, issued an Interim Report for consultation with the Community, which was presented at the ICANN meeting in Mexico City.

This Report presents the WG’s “initial thinking” on the questions under review; a public comment period is now open to allow for further inputs from the community to this Interim Report before its finalization.

The Interim Report is available in English [PDF, 124 KB]; other linguistic versions will follow shortly.

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."