.invalid

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

Key facts

Top level domain.name: invalid
Top level domain.introduced: 1999
Top level domain.type: Reserved top-level domain
Top level domain.status: Reserved to prevent conflict and confusion
Top level domain.intendeduse: When necessary to show an address guaranteed to be invalid
Top level domain.actualuse: Session Initiation Protocol, for identity protection; address munging e.g. on Usenet

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Wikidata facts

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inception: 1999-00-00

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Article

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Contents

Reserved DNS names
Purpose
References

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

==Reserved DNS names== In 1999, the Internet Engineering Task Force reserved the DNS labels , , , and so that they may not be installed into the root zone of the Domain Name System.