| 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 |
|---|---|---|---|
| 670-235 | Saipan | Northern Mariana Islands | Landline |
| 670-287 | Saipan | Northern Mariana Islands | Wireless |
| 670-789 | Saipan | Northern Mariana Islands | Wireless |
| 670-788 | Saipan | Northern Mariana Islands | Wireless |
| 670-233 | Saipan | Northern Mariana Islands | Landline |
| 670-532 | Saipan | Northern Mariana Islands | Landline |
| 670-237 | Saipan | Northern Mariana Islands | Landline |
| 670-286 | Saipan | Northern Mariana Islands | Wireless |
| 670-785 | Saipan | Northern Mariana Islands | Wireless |
| 670-868 | Saipan | Northern Mariana Islands | Wireless |
| 670-488 | Saipan | Northern Mariana Islands | Wireless |
| 670-664 | Saipan | Northern Mariana Islands | Landline |
| 670-234 | Saipan | Northern Mariana Islands | Landline |
| 670-483 | Saipan | Northern Mariana Islands | Wireless |
| 670-285 | Saipan | Northern Mariana Islands | Wireless |
| 670-682 | Saipan | Northern Mariana Islands | Landline |
| 670-878 | Saipan | Northern Mariana Islands | Wireless |
| 670-588 | Saipan | Northern Mariana Islands | Wireless |
| 670-898 | Saipan | Northern Mariana Islands | Wireless |
| 670-783 | Saipan | Northern Mariana Islands | Wireless |