CASAGRANDE — AZ
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 18 |
| QWEST CORPORATION | 9636 | 18 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | 8 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 7 |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | 4 |