code.

With the demise of X.400 e-mail and IANA's general aim of one TLD per country, use of .gb declined; the domain remains in existence, but it is not currently open to new domain registrations.

As of 2025, there are at least three subdomains resolving through DNS (although none serve a web page or use): hermes.dra.hmg.gb, delos.dra.hmg.gb, and dfhnet.dra.hmg.gb. They were originally owned by the Defence Research Agency,

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