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ICANN 是一家非营利公益型企业,其社群成员遍布全球各地,致力于确保互联网的安全性、稳定性和互用性。




新版注册数据目录服务 (RDDS) 路线图



ICANN 将召开首届远程公共会议




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敬请阅读 ICANN 总裁兼首席执行官马跃然 (Göran Marby) 为纪念他与塔瑞克·卡梅尔 (Tarek Kamel) 之间的友谊所撰写的博文,并在评论区分享您对塔瑞克的回忆。下文为博文摘要:当所爱的人去世时,我们瑞典人常说:他还活在我的回忆中。你们都已获悉,我们亲爱的挚友塔瑞克已经与世长辞,但他仍然活在我的回忆中。

ICANN 缩略语和专有名词

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ICANN 拥有成百上千、易造成混淆的缩略语和专有名词。我们制作了一套多语言工具,提供这些专有名词的定义,帮助您参与 ICANN 社群的工作。


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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."