Northern Mariana Islands phone numbers and area codes
Northern Mariana Islands has 1 area code and 35 assigned prefixes.
Look at a prefix's carrier mix below, or look up a full number on the home page.
- Mobile carrier 14%
- Phone company 86%
Area codes in Northern Mariana Islands
| Code | Area | Prefixes here |
|---|---|---|
| 670 | Northern Mariana Islands (all) | 35 |
Biggest local calling areas
Numbers are assigned to rate centers. These have the most prefixes in Northern Mariana Islands (the number is how many).
Carriers in Northern Mariana Islands
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Micronesian Telecommunications | Phone company | 15 | 43% |
| Pti Pacifica | Phone company | 15 | 43% |
| Guam Wireless Telephone | Mobile carrier | 5 | 14% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.