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Webinar: TMCH & IDNs

Webinar Details

Date: Wednesday, 19 June 2013

Time: 14:00-15:30 UTC

Adobe Connect: https://icann.adobeconnect.com/_a819976787/tmch/

You are invited to a webinar intended to address questions and provide a background around Internationalized Domain Names and the Trademark Clearinghouse processes, including the comments in Beijing about implementation of variant rules. As we have prioritized the applications so that the first new gTLDs will be IDNs, this is an opportunity to learn more about the TMCH and IDNs and provide more background to those interested on how things are working.

Please join this webinar on Wednesday, 19 June 2013 at 14:00 UTC (duration 90 minutes). The meeting will be run in an Adobe Connect room with a slide presentation.

Participants will have the opportunity to offer comments and ask questions during the Q&A section. During the course of the webinar, these may be submitted using the chat function of Adobe Connect. If you cannot join the live session, the recording of the session will be made available shortly after the meeting.


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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."