List of Internet top-level domains. This is a list of Internet top-level domains (TLDs).
A top-level domain is a domain name in the Domain Name System that is a direct subdomain of the DNS root zone. The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA).[1] In an initiative to expand the domain name space, IANA is considering approval of several proposed top-level domains. Original top-level domains[edit] Domainr, the domain name search engine.