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注册服务商是指向注册人提供通用顶级域名 (gTLD) 注册服务的实体。ICANN 和每个委任注册服务商之注册服务商委任协议》(RAA) 的约束,该协议规定了双方的义务。RAA 是 ICANN 合同合规部门处理投诉的依据。

根据 RAA,注册服务商必须提供以下与客户服务相关的服务:

  1. 注册服务商必须遵守 ICANN 的共识性政策,例如注册服务商之间的域名迁移政策统一域名争议解决政策Whois 数据提醒政策Whois 营销限制政策已恢复域名的准确性政策以及过期域名删除政策
  2. 注册服务商必须及时填充 Whois 数据。
  3. 注册服务商必须及时向注册管理机构提交更新后的注册信息。
  4. 注册服务商必须提供 Whois 数据的公共访问。
  5. 注册服务商必须要求所有注册域名持有者与之达成一个包含特定条款的注册协议。
  6. 注册服务商必须调查被举报的错误联系信息。
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."