Oklahoma Area Codes
Data last updated: June 25, 2026
Area Codes in Oklahoma
| NPA | Major Cities | Status | Exchanges | Overlay |
|---|---|---|---|---|
| 405 | Oklahoma City, Enid, Stillwater | Active | 783 | Yes |
| 539 | Tulsa, Fort Smith, Fayetteville | Active | 786 | Yes |
| 572 | Oklahoma City, Enid | Active | 786 | Yes |
| 580 | Oklahoma City, Enid, Guymon | Active | 778 | No |
| 918 | Tulsa, Broken Arrow, Muskogee | Active | 783 | Yes |
Top Carriers in Oklahoma
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 626 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 290 |
| T-MOBILE USA, INC. | 6529 | 206 |
| ONVOY, LLC - OK | 409F | 180 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | 150 |
| UNITED STATES CELLULAR - OK | 6272 | 121 |
| LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | 104 |
| PIONEER TEL. COOP., INC. | 2018 | 78 |
| COMCAST IP PHONE, LLC | 318J | 70 |
| VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | 62 |