Country code second-level domain

A country code second-level domain is a <a href="/facts/Second-level_domain/unn2I08J">second-level domain</a> to a <a href="/facts/Country_code_top-level_domain/z1edVsqQ">country code top-level domain</a>. Such a domain may be reserved by a <a href="/facts/Domain_name_registry/pkRjL2nr">domain name registry</a> for the registration of third-level domains, or assigned to a third party as a <a href="/facts/Subdomain/BM8N9jvH">subdomain</a>.
Many country code domain registries implement domain name classes at the second level underneath their ccTLD, such as are present in the original generic <a href="/facts/Top-level_domain/azjpPu2M">top-level domains</a> com, net, and org, which were intended for commercial entities, network operators, and non-profit organizations, respectively.
Many countries implement additional classes. For example, the <a href="/facts/United_Kingdom/kuPAILt2">United Kingdom</a> (<a href="/facts/.uk/3wmyJIPb">.uk</a>) uses <a href="/facts/.co.uk/3wmyJIPb">co.uk</a> for commercial purposes and <a href="/facts/.ac.uk/3wmyJIPb">ac.uk</a> for academic registrants. Brazil (<a href="/facts/.br/RU5JM9Dd">.br</a>) has a high number of predefined second-level domains, 140 as of 2021; they range from com.br for commercial activities and vet.br for veterinarians to wiki.br for wikis (see <a href="/facts/.br/RU5JM9Dd">.br § Second-level domains</a>).

Country code second-level domain open-in-new

Country code second-level domain