Which country domain uses the Internet country-code top-level domain .uk?

The United Kingdom uses the Internet country-code top-level domain .uk.

“.uk” is the country-code top-level domain assigned to the United Kingdom. It is used in domain names such as gov.uk and co.uk, although many organizations and individuals also use generic domains such as .com or newer alternatives.

The domain is administered by Nominet, a UK-based registry operator. Registration rules vary by the second-level domain. For example, co.uk has traditionally served commercial organizations, while org.uk is associated with organizations and me.uk with individuals.

The .uk domain should not be confused with .ua, which belongs to Ukraine, or .us, which belongs to the United States. Country-code top-level domains are generally based on the two-letter codes in the ISO 3166-1 standard, though historical and special cases exist.