.invalid

The name invalid is reserved by the Internet Engineering Task Force as a domain name that may not be installed as a top-level domain in the Domain Name System... Wikipedia

  • Introduced:  1999
  • TLD type:  Reserved top-level domain
  • Status:  Reserved to prevent conflict and confusion
  • Intended use:  When necessary to show an address guaranteed to be invalid
  • Actual use:  Session Initiation Protocol, for identity protection, address munging e.g. on Usenet
  • Data source:  DuckDuckGo

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