|Introduced||April 15, 1994|
|TLD type||Country code top-level domain|
|Registry||Guam Network Information Center|
|Sponsor||University of Guam|
|Intended use||Entities connected with Guam|
|Actual use||Not very heavily used|
|Registration restrictions||Must have a contact in Guam|
|Structure||Registrations are accepted only at the third level beneath various second-level labels|
.gu is the Internet country code top-level domain (ccTLD) for Guam.
Registrations are free of charge but are limited to people or companies with a contact in Guam, and are limited to third-level registrations beneath second-level names such as .com.gu. There has not been very much use of .gu addresses.
There are five Second Level Domains: