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评议开放日期: 2019 年 5 月 15 日 截止日期: 2019 年 6 月 30 日
发起组织: ICANN:全球域名分部
类别/标签: 顶级域
简介: 根区标签生成规则第三版 (RZ-LGR-3) 已于 2019 年 4 月 25 日正式发布,以征询公众意见。该版本整合了 28 种确认文字中的 16 种文字提案。随着社群正在逐渐编制根区标签生成规则 (RZ-LGR),RZ-LGR 研究组 (SG) 现已在 ICANN 董事会的要求下得以组建,用于研究 RZ-LGR 的技术使用考量,从而统一确定有效的顶级域 (TLD) 及其变体标签。根区标签生成规则研究组 (RZ-LGR-SG) 现已完成了其工作,并已发布《根区标签生成规则技术使用建议》,以征询社群的反馈意见。RZ-LGR-SG 将对社群建议进行考量,并对最终建议定稿。这份最终建议将呈交给 ICANN 董事会供其审核。

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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."