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What to Expect at ICANN55: A Guide for Business Stakeholders

RSVP via this form by 17 February 2016 This webinar is an introduction to ICANN and the Commercial Stakeholder Group. It is designed for people in the business world who are new to the ICANN Community and interested in the upcoming ICANN55 Public...

Fellowship and NextGen@ICANN Application Rounds for ICANN56

On 22 January, lCANN launched the application rounds for both the NextGen@ICANN and Fellowship Programs to participate in ICANN56 in Panama City, Panama in June 2016. On 5 February, ICANN announced that due to the severity of the Zika Virus...

Reminder: Nomination Period Open For ICANN Multistakeholder Ethos Award | Award Targeted for ICANN 56 | Nominations Close 12 March 2016

ICANN is pleased to remind community members that the nomination period for ICANN's Multistakeholder Ethos Award is open until 12 March 2016. This award program, launched in June 2014 in London, seeks to recognize long-standing community members...

Experienced Technology Leader Named as ICANN President and CEO

Göran Marby, an experienced business executive and government leader, has been named the next President and Chief Executive Officer of the Internet Corporation for Assigned Names and Numbers (ICANN). "I'm delighted to announce Göran as the new...




A Holiday Message from Fadi Chehadé

A Holiday Message from Fadi Chehadé


2016 ICANN Nominating Committee Interview

ICANN's Brad White speaks with 2016 NomCom Chair Stéphane Van Gelder and 2016 NomCom Chair-Elect Hans Petter Holden

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Transition Program Facilitation Meeting - 9 July 2015

Coordination call for the IANA Stewardship Transition and Enhancing ICANN Accountability Processes.

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CCWG-Accountability Co-Chair Mathieu Weill at ICANN53

Mathieu Weill, Co-Chair of the CCWG-Accountability reports on the chairs' briefings to various stakeholder groups today at ICANN53 in Buenos Aires.


Blog Posts

BGC's Comments on Recent Reconsideration Request

Leading into Marrakech: An Update from the CCWG-Accountability co-Chairs


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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."