Skip to main content

Internationalized Domain Name (IDN) Implementation Guidelines – Second Public Comment

Open Date: 19 October 2017 Close Date: 10 December 2017
Originating Organization: Global Domains Division
Categories/Tags: Second-Level Domains
Brief Overview: The Internationalized Domain Name (IDN) Implementation Guidelines relate to the IDN registration policies and practices, designed to minimize the risk of cybersquatting and consumer confusion, to cater to the interests of communities using local languages and scripts. Following the Call for Community Experts, a Working Group (WG) was formed in October 2015 to review the current version (3.0) of the IDN Implementation Guidelines, last updated in 2011. The WG updated the Guidelines and conducted the first public comment on them in March 2017. Based on the feedback received from the community, the WG has further updated the draft guidelines. The WG is releasing the latest draft version of the IDN Implementation Guidelines 4.0 [PDF, 316 KB] to get general feedback as well as response to some specific queries highlighted in this draft. Based on responses, the WG will finalize the Guidelines.
Link: https://www.icann.org/public-comments/idn-guidelines-2017-10-19-en

More Announcements
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."