A country code second-level domain is a

second-level domain In the Domain Name System (DNS) hierarchy, a second-level domain (SLD or 2LD) is a domain that is directly below a top-level domain (TLD). For example, in , is the second-level domain of the TLD. Second-level domains commonly refer to the organ ...

to a

country code top-level domain A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all tw ...

. Such a domain may be reserved by a

domain name registry A domain name registry is a database of all domain names and the associated registrant information in the top level domains of the Domain Name System (DNS) of the Internet that enables third party entities to request administrative control of a d ...

for the registration of third-level domains, or assigned to a third party as a

subdomain In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is a part of another (main) domain. For example, if a domain offered an online store as part of their website it might use the subdomain. Overview The Domain Name System ...

. 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 domain A top-level domain (TLD) is one of the domain name, domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the DNS root zone, root zone of the nam ...

s , , and , which were intended for commercial entities, network operators, and non-profit organizations, respectively. Many countries implement additional classes. For example, the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

( .uk) uses for commercial purposes and for academic registrants. Brazil ( .br) has a high number of predefined second-level domains, 140 as of 2021; they range from for commercial activities and for veterinarians to for wikis (see .br § Second-level domains).

References

{{reflist Domain Name System *

See also

References