Northern Mariana Islands (Commonwealth of) +1 (670)

Number Format

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

1 July 1997 - switch from +670 to +1 670

Northern Mariana Islands originally used country code +670. It began to move under the North American Numbering Plan (NANP) on 1 July 1997 with the introduction of +1 670.

A permissive dialling period continued until 1 July 1998, after which +670 was discontinued and +1 670 became mandatory.

Country code +670 was reassigned relatively quickly to East Timor.

Other information

Carrier is Verizon Pacifica (formerly GTE Pacifica).

See United States Pacific Islands section.