Acronym for generic top level domain
TLDs with three or more characters are referred to as "Generic" Top Level Domain or gTLDs. Generally speaking, an unsponsored gTLD Registry operates under policies established by the global Internet community directly through the ICANN process. .biz, .com, .info, .name, .net, .org, and .pro are unsponsored TLDs.
List of all gTLDs:
The .aero domain is reserved for members of the air-transport industry and is sponsored by Société Internationale de Télécommunications Aéronautiques (SITA).
The .asia domain is restricted to the Pan-Asia and Asia Pacific community and is operated by DotAsia Organisation.
The .biz domain is restricted to businesses and is operated by NeuLevel, Inc.
The .cat domain is reserved for the Catalan linguistic and cultural community and is sponsored by Fundació puntCat
The .com domain is operated by VeriSign Global Registry Services.
The .coop domain is reserved for cooperative associations and is sponsored by Dot Cooperation LLC.
.info domain is operated by Afilias Limited.
.jobs domain is reserved for human resource managers and is sponsored by Employ Media LLC.
.mobi domain is reserved for consumers and providers of mobile products and services and is sponsored by mTLD Top Level Domain, Ltd.
.museum domain is reserved for museums and is sponsored by the Museum Domain Management Association.
.name domain is reserved for individuals and is operated by Global Name Registry.
.net domain is operated by VeriSign Global Registry Services.
.org domain is operated by Public Interest Registry. It is intended to serve the noncommercial community, but all are eligible to register within .org.
.pro domain is restricted to credentialed professionals and related entities and is operated by RegistryPro.
.tel domain is reserved for businesses and individuals to publish their contact data and is sponsored by Telnic Ltd.
.travel domain is reserved for entities whose primary area of activity is in the travel industry and is sponsored by Tralliance Corporation.
These gTLDs can only be used by special organisations:
.gov domain is reserved exclusively for the United States Government. It is operated by the US General Services Administration.
.edu domain is reserved for postsecondary institutions accredited by an agency on the U.S. Department of Education's list of Nationally Recognized Accrediting Agencies and is registered only through Educause.
.mil domain is reserved exclusively for the United States Military. It is operated by the US DoD Network Information Center.
.int domain is used only for registering organizations established by international treaties between governments. It is operated by the IANA .int Domain Registry.