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Variant Issues Project -- Devanagari Case Study Team Issues Report

Comment Period Important Information Links
Open Date: 3 October 2011
Close Date: 14 November 2011 Public Comment Announcement To Submit Your Comments (Forum Closed)
Time (UTC): 23:59 View Comments Submitted Report of Public Comments
Originating Organization: ICANN
Purpose:

Document posted for public comment: Devanagri Case Study Team Report [PDF, 462 KB]

ICANN has conducted six case studies of individual scripts to investigate any issues that need to be resolved to facilitate a good user experience for IDN variant TLDs. Public comment on the Chinese case study team report will inform the formulation of the combined issues report.

Current Status: Individual case studies for the Arabic, Chinese, Cyrillic, Devanagari, Greek, and Latin scripts have been undertaken. Each study, carried out by a volunteer community study team with help from ICANN staff, concentrates on specific issues that are relevant to the individual scripts.
Next Steps: ICANN will complete a consolidated issues report that will summarize and synthesize the issues identified by the case study teams. It is expected that the results of the case studies will play a crucial role in the identification of solutions towards the delegation of IDN variant TLDs. The group's work in preparation of this consolidated report is scheduled to start in October at the ICANN public meeting in Dakar, Senegal.
Staff Contact: Naela Sarras Email: naela.sarras@icann.org
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."