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注册服务机构数据托管计划

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根据注册服务机构认证协议（2009 RAA 和 2013 RAA 的第 3.6 节）之规定，注册服务机构需要在 ICANN 批准的注册服务机构数据托管代理 (DEA) 中托管具体的注册数据，其中，注册服务机构 DEA 应遵循注册服务机构数据托管规范 [PDF，30 KB] 定义的"注册服务机构数据托管"(RDE) 计划。所有注册服务机构和注册服务机构 DEA 都必须遵守《RDE 规范》中的条款。注册服务机构可以免费使用 ICANN 指定的 DEA；或者，注册服务机构也可以自行承担费用，选择使用由 ICANN 和特定注册服务机构（根据《RDE 规范》第 3.3.1 节的规定，为第三方提供商或 TPP）共同批准的 DEA。

如果注册服务机构希望变更其 DEA，则应当遵循注册服务机构数据托管代理变更流程。

截至 2019 年 10 月 23 日，ICANN 不再寻求其他的数据托管申请人。下面提供了 ICANN 指定和批准的注册服务机构 DEA 最新列表。

ICANN 指定的注册服务机构数据托管代理

DENIC Services GmbH & Co. KG
联系人：DENIC 托管服务部
电子邮件：escrow@denic-services.de
电话：+49 6151 6292710
RDE 协议模板

NCC Group Software Resilience (NA) LLC
联系人：Data Escrow Support
电子邮件：icannenquiries@nccgroup.com
电话：+1 678 381 2764
RDE 协议模板

ICANN 批准的注册服务机构数据托管代理

北龙泽达（北京）数据科技有限公司
联系人：张丽丽（音译）
电子邮件：registrarescrow@cnic.cn
电话：+86 10 6252 3580
RDE 协议模板

中国互联网信息中心
联系人：托管服务部
电子邮件：deagent@cnnic.cn
电话：+86 10 5881 3000
RDE 协议模板

中国组织名称管理中心 (CONAC)
联系人：托管支持部
电子邮件：technical_cn@163.com
电话：+86 10 6900 1158
RDE 协议模板

股份公司互联网交换"MSK-IX"
联系人：数据托管服务部
电子邮件：escrow@msk-ix.ru
电话：+7 495 737 9296
RDE 协议模板

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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""icann.org"" is not an IDN."