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The use of .uk rather than .gb for the top-level domain is due to its pre-existing use in the (now obsolete) JANET Name Registration Scheme in which the order of address components were reversed. .uk was made available in DNS to simplify the translation to and from these addresses. There were plans for eventual transition to .gb to accord with correct usage, but this never occurred; the use of .uk is now entrenched, and it is impossible to register a .gb domain. Unusually, the '.co.uk' second-level domain within '.uk' is more widely used than for most other countries where the ccTLD has primacy. This is a result of specific rules set by Nominet, the UK's naming body, prohibiting direct use of the ccTLD. The website itself is formally no exception to this rule, however, the second level domain it uses "nic.uk" is not open to public registration. It uses OpenDNSSEC. |