. gu is the country code top -level domain ( ccTLD) for Guam. They were introduced on 15 April 1994 and is administered by the State University.
Domains are only logged on to third level. There are the following second- level domains:
- Com.gu - commercial companies
- Net.gu - Internet Service Provider (ISP )
- Gov.gu - Government and other agencies
- Org.gu - Nonprofits
- Edu.gu - educational institutions
Overall a must. Gu domain be between three and 63 characters and contain only alphanumeric characters. Internationalized domain names are not supported. The top -level domain may only be used by individuals and legal entities established in Guam.