HOLBROOK — AZ
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | 2 |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | 3285 | 1 |
| SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 4146 | 1 |
| CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. | 4426 | 1 |