Generic top-level domain
A Generic Top Level Domain (gTLD) is one of the top level domains (TLD) in the Domain Name System (DNS) maintained by the Internet Assigned Numbers Authority (IANA). There are 21 gTLDs in the root zone of the internet and they are categorized as:[1]
- generic (.com,.info, .net, .org) which can be used for general purposes;
- sponsored, (.aero, .asia, .cat, .coop, .edu, .gov, .int, .jobs, .mil, .mobi, .tel and .travel) which can only be used by entities engaged within the specific industry;
- generic restricted(.biz, .name, .pro) which can be use only for their specified purposes and
- infrastructure(.arpa) is exclusively used to support operationally-critical infrastructural identifier spaces and it is operated by IANA.
The gTLDs are managed and operated by their sponsor organizations and registry operators that were approved by the Internet Corporation for Assigned Names and Numbers.