.gb domain extension

.gb is the country code top-level domain for the United Kingdom of Great Britain and Northern Ireland. It is managed as a reserved domain by IANA, meaning it is not open for general registration. The domain was created in 1985 and was originally intended for use by the UK, but the .uk ccTLD became the standard. Today, .gb exists only in the root zone and is not delegated for active use. Both administrative and technical contact for the domain are handled by Jisc, a UK education and research networking organization. No new registrations are possible, and the domain remains a historical artifact of the early internet.

Registered on July 24, 1985, .gb was one of the first country code TLDs. It was never widely adopted because .uk was preferred. It remains reserved by IANA.