|gu| Guam +1 (671)

 

Number Format

Area Code:            3 digits
Subscriber Number:    7 digits
Trunk Prefix:         1
International Prefix: 011

 

1 July 1997 - switch from +671 to +1 671

Guam originally used country code +671. It began to move under the North American Numbering Plan (NANP) on 1 July 1997 with the introduction of +1 671.

A permissive dialling period continued until 1 July 1998, after which +671 was discontinued and +1 671 became mandatory.

See: Guam Telephone Authority announcement (via ITU, 21 April 1997).

 

Other Information

Carrier is Guam Telephone Authority (website may have limited details).

See United States Pacific Islands section.