A generic top-level domain (gTLD) is a domain name extension which is not associated with a particular region or country. .com and .net are examples of gTLDs. The list below shows some of the most popular gTLDs and their official operators.
.com - operated by – VeriSign
.net - operated by – VeriSign
.org - operated by – Public Interest Registry
.biz - operated by – NeuLevel
.info - operated by – Afilias
.eu - operated by – EURid
.mobi - operated by – dotMobi