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Announcements

Draft Restated Articles of Incorporation

Open Date: 27 May 2016 Close Date: 6 July 2016 Originating Organization: ICANN Categories/Tags: IANA Stewardship Transition, Implementation Brief Overview: As ICANN continues its implementation...

ICANN Hires DNS Expert to Lead Research

Matt Larson, an expert in Domain Name System (DNS) infrastructure and security, has joined the Internet Corporation for Assigned Names and Numbers (ICANN) as Vice President of Research. "We are incredibly excited to have Matt on our team," said...

Call for Expressions of Interest for 2017 Nominating Committee Chair and Chair-Elect

ICANN is seeking expressions of interest for leadership roles in the 2017 Nominating Committee (NomCom) - that of the 2017 NomCom Chair and Chair-Elect. In September 2016, the ICANN Board appointed Stéphane Van Gelder as the 2016 Nominating...

Revisions to ICANN Expected Standards of Behaviors

Open Date: 16 May 2016 Close Date: 25 June 2016 Originating Organization: Legal Categories/Tags: Transparency/Accountability Brief Overview: This public comment proceeding seeks to obtain...

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Multimedia

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Introduction to ICANN Reviews

Email us to contact a team member at mssi-secretariat@icann.org.

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Interview with Göran Marby

ICANN's Brad White sits down with Göran Marby.

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ICANN55 Wrap Up Interview With Atallah And Crocker

ICANN's Luna Madi sat down with interim ICANN President & CEO Akram Atallah and ICANN Board Chair Steve Crocker to talk about ICANN's historic week. They discussed the community's extraordinary...

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Interview With Katrina Sataki ccNSO Chair At ICANN55

Interview With Katrina Sataki ccNSO Chair At ICANN55

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Blog Posts

New ICANN Bylaws

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ICANN Launches African Engagement Office In Nairobi

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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."