United States Phone Numbers Beginning With 670 Area Code
| Prefix |
City |
| 670-233 | Saipan, United States |
| 670-234 | Saipan, United States |
| 670-235 | Saipan, United States |
| 670-236 | Saipan, United States |
| 670-237 | Saipan, United States |
| 670-256 | Saipan, United States |
| 670-284 | Saipan, United States |
| 670-285 | Saipan, United States |
| 670-286 | Saipan, United States |
| 670-287 | Saipan, United States |
| 670-288 | Saipan, United States |
| 670-321 | Saipan, United States |
| 670-322 | Saipan, United States |
| 670-323 | Saipan, United States |
| 670-328 | Saipan, United States |
| 670-433 | Tinian, United States |
| 670-483 | Saipan, United States |
| 670-484 | Saipan, United States |
| 670-488 | Tinian, United States |
| 670-532 | Rota, United States |
| 670-555 | Saipan, United States |
| 670-588 | Rota, United States |
| 670-664 | Saipan, United States |
| 670-682 | Saipan, United States |
| 670-783 | Saipan, United States |
| 670-785 | Saipan, United States |
| 670-788 | Saipan, United States |
| 670-789 | Saipan, United States |
| 670-838 | Saipan, United States |
| 670-848 | Saipan, United States |
| 670-858 | Saipan, United States |
| 670-868 | Saipan, United States |
| 670-878 | Saipan, United States |
| 670-888 | Saipan, United States |
| 670-898 | Saipan, United States |
| 670-989 | Saipan, United States |