FLAGSTAFF — AZ
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9636 | 19 |
| ONVOY, LLC - AZ | 630E | 13 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | 9 |
| T-MOBILE USA, INC. | 6529 | 5 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 4 |