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Announcements

León Felipe Sánchez Ambía Selected by At-Large Community as Next ICANN Board Director

On behalf of Tijani Ben Jemaa, Chair of the Board Member Selection Process Committee (BMSPC), we are announcing the final result of the ICANN Board Director seat (#15) election, which was selected by the At-Large Community. The At-Large...

Pre-ICANN58 Policy Open House Registration

Pre-ICANN58 Policy Open House Monday, 6 March 2017 10:00 UTC and 19:00 UTC Please register via this form by 3 March 2017! The Policy Development Support Team is pleased to announce two sessions for the Pre-ICANN58 Policy Open House on...

Interim Paper Cross-Community Working Group on Use of Names of Countries and Territories as Top Level Domains

Open Date: 24 February 2017 Close Date: 21 April 2017 Originating Organization: ccNSO/GNSO, Chartering Organizations Categories/Tags: Policy Development, ccTLDs, Security/Stability, ISO 3166, Top-Level...

Revised Report of the Independent Review of the Trademark Clearinghouse Now Available

LOS ANGELES – 23 February 2017 – The Internet Corporation for Assigned Names and Numbers (ICANN) today published the Revised Report of the Independent Review of the Trademark Clearinghouse. Read the report [PDF, 1.28 MB]. The review was...

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Participación LAC en ICANN57

Conozca más acerca del Programa de becas: https://www.icann.org/fellowshipprogram Conozca más sobre la GNSO: http://gnso.icann.org/en/ Conozca más sobre At-Large:...

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LAC participation at ICANN57

Learn more about the Fellowship Program: https://www.icann.org/fellowshipprogram Learn more about the GNSO: http://gnso.icann.org/en/ Learn more about At-Large: https://atlarge.icann.org/ Meet...

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ICANN’s CTO David Conrad Talks About Changing The Master Key Of The DNS

ICANN’s Brad White speaks with David Conrad, ICANN's Chief Technology Officer, about the first root zone key signing key rollover at ICANN57.

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Watch The Wrap - Up Interview With Stephen Crocker And Göran Marby At ICANN57

ICANN's Liana Teo speaks with Board Chair Stephen Crocker and President and CEO Göran Marby about ICANN57.

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Blog Posts

Six Weeks in Contractual Compliance and Consumer Safeguards

The Problem with "The Seven Keys"

ICANN Expands Engagement in the Caribbean in 2016

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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."