Skip to main content


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。




EPDP 针对 gTLD 注册数据的《初步报告》现已发布——公共评议期现已启动



ccNSO 审核调查现已发布征询公众意见



ICANN 缩略语和专有名词

Thumb landing pages 2018 10 update  icannorg 220x175 acronym

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。


Thumb magnifying blue



Thumb landing pages icannorg 492x279 ec



Thumb landing pages icannorg 220x175

有意了解 ICANN 的工作以及参与 ICANN 活动的重要性?点击以上链接即可使用您的语言访问我们的信息图表,了解有关如何参与活动并获取最新进展的信息。

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."