| General Information about Area Code 670 | |
|---|---|
| Country | United States |
| State / Province / Territory | Northern Mariana Islands |
| Major City | Capitol Hill |
| Time Zone | Chamorro (UTC+10:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 670-858 | Saipan | Northern Mariana Islands | Wireless |
| 670-888 | Saipan | Northern Mariana Islands | Wireless |
| 670-838 | Saipan | Northern Mariana Islands | Wireless |
| 670-989 | Saipan | Northern Mariana Islands | Wireless |
| 670-848 | Saipan | Northern Mariana Islands | Wireless |
| 670-256 | Saipan | Northern Mariana Islands | Landline |
| 670-328 | Saipan | Northern Mariana Islands | Landline |
| 670-323 | Saipan | Northern Mariana Islands | Landline |
| 670-288 | Saipan | Northern Mariana Islands | Landline |
| 670-433 | Saipan | Northern Mariana Islands | Landline |
| 670-236 | Saipan | Northern Mariana Islands | Landline |
| 670-484 | Saipan | Northern Mariana Islands | Wireless |
| 670-322 | Saipan | Northern Mariana Islands | Landline |
| 670-321 | Saipan | Northern Mariana Islands | Landline |