Country code second-level domain

Template:Refimprove A country code second-level domain is a second-level domain to a country code top-level domain. Such a domain may be reserved by a domain name registry for the registration of third-level domains, or assigned to a third party as a subdomain.

Many country code domain registries implement domain name classes at the second level underneath their ccTLD, such as are present in the original generic top-level domains Template:Mono, Template:Mono, and Template:Mono, which were intended for commercial entities, network operators, and non-profit organizations, respectively.

Many countries implement additional classes. For example, the United Kingdom (.uk) uses Template:Mono for commercial purposes and Template:Mono for academic registrants. Brazil (.br) has a high number of predefined second-level domains, 140 as of 2021; they range from Template:Mono for commercial activities and Template:Mono for veterinarians to Template:Mono for wikis (see .br § Second-level domains).

See also

• Domain Name System
• Private sub-domain registry
• Public Suffix List