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  1. ICANNの審査 - レジストリ契約の最初の期間が終了する約90~120暦日前に、ICANN組織は米国財務省の外国資産管理局(OFAC)のチェックを行い、レジストリオペレータの遵守状況を審査し、更新条件を満たしていること(つまり、レジストリ契約の第4.2項に定めるいかなる例外も適用されないこと)を確認します。
  2. 決定 - レジストリ契約の更新を予定しているレジストリオペレータには、TLDの継続期間の開始を反映したレジストリ契約の更新を知らせる通知書が発行されます。これらの更新の通知書は、レジストリのプライマリ連絡先および法務担当者に送付されます。可能な場合、ICANN組織は、同じレジストリのプライマリ連絡先と法務担当者がいる1つまたは複数のTLDに対して、1通の更新通知書を一括で提供します。ICANNは、更新されないレジストリ契約について、関連する遵守事項の一部として通知を行います。
  3. 管理タスク - 更新通知書が発行された場合、ICANN組織は通知書をそのTLDに関連する レジストリ契約のWebページで公開します。



  1. レジストリ協定
  2. NSpユーザーガイド:連絡先の更新
  3. レジストリ契約の終了
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."