.uk is the Internet country code top-level domain (ccTLD) for the United Kingdom. It was first registered in July 1985, seven months after the original generic top-level domains such as .com and the first country code after .us.

Introduced24 July 1985; 37 years ago (1985-07-24)
TLD typeCountry code top-level domain
RegistryNominet UK
SponsorNominet UK
Intended useEntities connected with the  United Kingdom
Actual useVery popular in the United Kingdom
Registered domains11,077,595 (9,718,170 third level and 1,359,425 second level) (January 2022)[1]
Registration restrictionsNone
Dispute policieswww.nominet.uk/domain-support/uk-domain-disputes
Registry websitewww.nominet.uk

As of April 2021, it is the fifth most popular top-level domain worldwide (after .com, .cn, .de and .net), with over 10 million registrations.[2][3][4][5]

.uk has used OpenDNSSEC since March 2010.[6]

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