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第二版根区标签生成规则 (RZ-LGR-2)

评议开放日期: 2017 年 6 月 6 日 截止日期: 2017 年 7 月 24 日
发起组织: 全球域名分部
类别/标签: 顶级域
简介: 为了确定有效的顶级国际化域名 (Internationalized Domain Name, IDN) 标签及其变体标签,社群现已对《针对根区国际化域名 (IND) 标签编制和维护标签生成规则的流程》 [PDF, 1.39 Mb]一文进行了定稿。该流程要求以社群为基础的、按照相关文字召集起来的生成专家组 (Generation Panels, Gps) 集合并提出具体规则。整合专家组 (Integration Panel, IP) 将对这些规则进行评估后纳入进根区标签生成规则 (RZ-LGR)。整合专家组现已成功评估了五种其他文字的根区标签生成规则 (LGR),即埃塞俄比亚文、格鲁吉亚文、老挝文、高棉文和泰国语。这些规则分别由相应的生成专家组在针对各种提案启动了公共评议期后正式提交。整合专家组则负责将这些提案,以及在根区 LGR 第一版 (RZ-LGR-1) 中已经纳入的阿拉伯文提案联合整合进第二版根区 LGR (RZ-LGR-2 [PDF, 891 KB])。根据本流程,RZ-LGR-2 现已发布并启动公共评议期,以搜集定稿前的社群反馈意见。

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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."