Skip to main content

Welcome to the new! Learn more, and send us your feedback. Dismiss

Join Us

Thursday 23 April 2015 for an update on ICANN’s progress during Q3 (period ending 31 March 2015). If you are a member of the press or someone with a general interest in ICANN’s work, we encourage you to participate. There will be a Q&A session. Please register to receive instructions on how to participate.

Register Now

News and Announcements

ICANN Nominated for WSIS Project Prizes 2015

We Want Your Vote! Image

ICANN has been nominated for the WSIS Project Prizes 2015 in two categories. We invite you to participate in the contest by casting your vote before the 1 May 2015 deadline. You can learn more about our two nominated projects and how to submit your vote by clicking the link above.

Fellowship Application Round Opens for ICANN 54 Dublin

ICANN 54 Dublin Logo

The ICANN Fellowship program is seeking participants from developing countries of the world to help create a broader base of knowledgeable constituents to engage in the multistakeholder process and become the new voice of experience in their regions and beyond. If you are interested please click the link above.

Understand ICANN’s 5-Year Strategic Plan

Image + Text: One World, One Internet, ICANN Strategic Plan 2016-2020

Click the link above to view our animated video that explains the goal of ICANN’s 5-Year Strategic Plan. With extensive input from the ICANN community, this Strategic Plan includes 5 main overarching strategic objectives we plan to achieve by 2020.

View all
Home groups
ICANN Groups

We depend on the support of many different types of groups and sub-structures: Advisory Commitees, Supporting Organizations, standingcommittees, working groups, review teams, task forces, and more.

Explore all Groups

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."