.invalid
Introduced 1999
TLD type Reserved top-level domain
Status Reserved to prevent actual use
Registry IANA
Sponsor None
Intended use When it's necessary to show an address guaranteed to be invalid, and visible as such at a glance
Actual use Popular to put at the end of intentionally-bad e-mail addresses used in newsgroup postings to avoid spam
Registration restrictions No registrations are possible, as this domain is not in the root
Structure Users can use it in any desired structure; it doesn't really exist
Documents RFC 2606
Dispute policies None
Website None

.invalid is a reserved top-level domain not intended for practical use in the global Domain Name System (DNS). It was defined in June 1999 by RFC 2606, together with .test, .localhost, and .example.

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