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新 gTLD:根区域调整报告


报告:新 gTLD 对根服务器运行和置备的影响 [PDF, 2.66 MB]

ICANN 现公布其关于"新 gTLD 对根服务器运行和置备的影响"的报告。该报告按照 ICANN 政府咨询委员会的要求编制,委员会要求提供"一份包括根区域调整的所有基本数据在内的提供全面分析的完整报告"。


该报告是 ICANN 技术委员会、机构群体和工作人员共同协作的成果。已对报告进行多次修改,以提供一个符合 GAC 要求的版本。尽管如此,所公布的报告仍应视为第一版,以便根据政府或其他方的问题和澄清要求对报告进行修改。

ICANN 会议期间通常不公布新报告。该报告日前已转发给 GAC,现根据其他方的要求公布该报告。

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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."