ADA — OK
Data last updated: August 31, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 7 |
| T-MOBILE USA, INC. | 6529 | 4 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 3 |
| UNITED STATES CELLULAR - OK | 6272 | 2 |
| BANDWIDTH.COM CLEC, LLC - OK | 119F | 1 |