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Preliminary Issue Report on a GNSO Policy Development Process to Review All Rights Protection Mechanisms in All gTLDs

Forum Announcement: Comment Period Opens Date: 9 October 2015 Categories/Tags: Policy Processes Purpose (Brief): The Preliminary Issue Report [PDF, 376 KB] is published for public comment to obtain community...

ICANN Announces New Registry Termination Webpage

ICANN today launched a new gTLD Registry Agreement Termination Information Page on This webpage will be the source of all current information related to any requests for termination of a gTLD Registry Agreement. Under the gTLD...

Call for Participation: Workshop on Internationalized Domains Names (IDNs) in Africa

The Internet Corporation For Assigned Names and Numbers (ICANN) will be hosting a workshop on Internationalized Domain Names (IDNs) from 26-27 November 2015 in Point- Noire, Congo, prior to the AFRINIC-23 meeting. Building on ICANN's Africa...

Process for Considering Comments for Two-Character Letter/Letter Labels Launched

ICANN today announced that it will begin the first phase of the process for considering comments on two-character letter/letter domain name labels. During this phase, ICANN will request that governments and others who commented on these labels...




A Welcome Message for ICANN54 from Michele Neylon, CEO of Blacknight Solutions

Watch Michele Neylon's welcome message to the upcoming ICANN54 in Dublin 18-22 October 2015. To register or view the full schedule click here:


Getting to Know Contractual Compliance | French

Are you a domain name holder interested in learning more about how ICANN’s Contractual Compliance can help you with domain name registration issues? Click the title and take a moment to view a new...

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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.


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ICANN's Global Support Center: We're Here to Help!


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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."