A generic top-level domain (gTLD) is one of the categories of top-level domains (TLDs) maintained by the Internet Assigned Numbers Authority (IANA) for use in the Domain Name System of the Internet.
.AERO Air-transport industry
.ARPA Address and Routing Parameter Area
.ASIA Asia Pacific community
.BIZ Business
.CAT Catalan community
.COM Commercial
.COOP Cooperative associations
.EDU Educational
.GOV U.S. governmental
.INFO Information
.INT Intergovernmental organizations
.JOBS Human resources
.MIL U.S. Military
.MOBI Mobile products and services
.MUSEUM Museums
.NAME Individuals, by name
.NET Network infrastructure
.ORG Non-profit organizations
.PRO Credentialed professionals
.TEL Internet communication services
.TRAVEL Travel and tourism industry