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域名注册管理后端应急运行机构 (Emergency Back-end Registry Operator, EBERO) 是新 gTLD 项目的一项重要创新。当通用顶级域 (generic Top-Level Domain, gTLD) 运营商有可能无法继续执行下述五项关键注册管理机构职能之一时,EBERO 提供商将被临时激活。确保这些职能可用性保护了注册人,即域名持有人,并为域名系统 (Domain Name System, DNS) 和本行业的生态系统增加了另一层保护。这五项关键注册管理机构职能包括:

  1. 针对注册域名的域名系统解析
  2. 共享注册系统的运营
  3. 注册数据目录服务的运营
  4. 注册数据托管存储
  5. 根据 DNSSEC 的要求维护一个已经适当签名的根区

EBERO 提供商的服务范围是有限的。例如,EBERO 提供商将不会提供 gTLD 运营商可能向其客户提供的额外服务,例如:网络托管或网络分析。


ICANN 负责宣布需要激活 EBERO 应急服务的事件,并负责协调所有应急响应活动。EBERO 不适用于某些传统 gTLD。


当前 EBERO 提供商已签协议



以前的 EBERO 提供商已签协议

  • CNNIC(2013 年 8 月 – 2019 年 8 月)[PDF, 1.04 MB]
  • CORE 理事会(2013 年 8 月 – 2019 年 8 月)[PDF, 1.02 MB]
  • Nominet 公司(2014 年 1 月 – 2019 年 8 月)[PDF, 905 KB]
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."