MADILL — OK
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 2 |
| ONVOY, LLC - OK | 409F | 1 |
| CHICKASAW TELECOMMUNICAIONS SERVICES, INC. | 4630 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | 1 |
| UNITED STATES CELLULAR - OK | 6272 | 1 |