G

.ga
The Internet country code top-level domain (ccTLD) for Gabon

.gd
The Internet country code top-level domain (ccTLD) for Grenada

.ge
The Internet country code top-level domain (ccTLD) for Georgia

.gf
The Internet country code top-level domain (ccTLD) for French Guyana (Guyane Française)

.gg
The Internet country code top-level domain (ccTLD) for Guernsey, Alderney, Sark

.gh
The Internet country code top-level domain (ccTLD) for Ghana

.gi
The Internet country code top-level domain (ccTLD) for Gibraltar

.gl
The Internet country code top-level domain (ccTLD) for Greenland (Grønland, Kalaallit Nunaat)

.gm
The Internet country code top-level domain (ccTLD) for Gambia

.gn
The Internet country code top-level domain (ccTLD) for Guinea (Guinée)

.gp
The Internet country code top-level domain (ccTLD) for Guadeloupe

.gq
The Internet country code top-level domain (ccTLD) for Equatorial Guinea (Guinea Ecuatorial)

.gr
The Internet country code top-level domain (ccTLD) for Greece (Ellás)

.gs
The Internet country code top-level domain (ccTLD) for South Georgia and the South Sandwich Islands

.gt
The Internet country code top-level domain (ccTLD) for Guatemala

.gu
The Internet country code top-level domain (ccTLD) for Guam

.gw
The Internet country code top-level domain (ccTLD) for Guinea-Bissau (Guiné-Bissau)

.gy
The Internet country code top-level domain (ccTLD) for Guyana

gTLD - Generic Top Level Domain
A generic top-level domain (gTLD) is a top-level domain used (at least in theory) by a particular class of organization. These are three or more letters long, and are named for the type of organization that they represent (for example, .com for commercial organizations). The following gTLDs currently exist (as does .arpa, which is sometimes considered a gTLD):
.aero - for the air transport industry
.asia - for companies, organisations and individuals in the Asia-Pacific region
.biz - for business use
.cat - for Catalan language/culture
.com - for commercial organizations, but unrestricted
.coop - for cooperatives
.edu - for post-secondary educational establishments
.gov - for governments and their agencies in the United States
.info - for informational sites, but unrestricted
.int - for international organizations established by treaty
.jobs - for employment-related sites
.mil - for the US military
.mobi - for sites catering to mobile devices
.museum - for museums
.name - for families and individuals
.net - originally for network infrastructures, now unrestricted
.org - originally for organizations not clearly falling within the other gTLDs, now unrestricted
.pro - for certain professions
.tel - for services involving connections between the telephone network and the Internet (added March 2, 2007)
.travel - for travel agents, airlines, hoteliers, tourism bureaus, etc.
The following gTLDs are in the process of being approved, and may be added to the root nameservers in the near future:
.post - for postal services
.geo - for geographically related sites
.cym - for Welsh language/culture