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GNSO Translation and Transliteration of Contact Information Policy Development Process (PDP) Recommendations for Board Consideration

Forum Announcement: Comment Period Opens on Date: 29 June 2015 Categories/Tags: Policy Processes Purpose (Brief): This public comment proceeding seeks to obtain community input on the seven recommendations...

ICG Announces Upcoming Meetings

The IANA Stewardship Transition Coordination Group will meet in Los Angeles from 18-19 September. Further details will be announced. The IANA Stewardship Transition Coordination Group (ICG) has scheduled its twentieth to twenty-sixth calls: ...

FY16 Operating Plan and Budget Adopted by ICANN Board at ICANN 53 in Buenos Aires

ICANN is pleased to announce the adoption of the FY16 Operating Plan and Budget by the Board at ICANN 53 in Buenos Aires. The document is the result of many months of collaborative work between the community, staff and Board Finance Committee...

ICANN53 Buenos Aires GAC Communiqué

The Governmental Advisory Committee (GAC) meeting at ICANN53 has issued its Buenos Aires Communiqué. It is available for review at GAC Buenos Aires Communiqué. [PDF, 108 KB].




ICANN Leadership at Buenos Aires Meeting

ICANN Board Chairman Steve Crocker and President and CEO Fadi Chehadé discuss the achievements at ICANN 53 in Buenos Aires including progress on the IANA Stewardship Transition, an historic...


CWG-Stewardship Co-Chair Jonathan Robinson at ICANN53

Jonathan Robinson, Co-Chair of CWG-Stewardship, reports on the milestone reached at ICANN53 in Buenos Aires towards developing a final IANA Stewardship Transition proposal.

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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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Thomas Rickert at ICANN 53

Thomas Rickert, Co-chair of the CCWG-Accountability, summarizes progress on the group's accountability proposal during the first day of ICANN53.


Blog Posts

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Get Ready for ICANN 54 in Dublin!

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Welcome to ICANN53!

Hero1 fadi chehade 750x425 20jun15

A Message from Buenos Aires


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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."