EntityQ936463· pop 25· linked from 121 articles

.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

via Wikipedia infobox

Article

3 sections

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.