KIEFER — OK
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 2 |
| BANDWIDTH.COM CLEC, LLC - OK | 119F | 1 |
| ONVOY, LLC - OK | 409F | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 2 |
| BANDWIDTH.COM CLEC, LLC - OK | 119F | 1 |
| ONVOY, LLC - OK | 409F | 1 |