All assignees
130 prefixes in 572 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 572-552 | CALVIN | 409F | 2023-01-10 | Yes |
| 572-555 | DIR ASST | MULT | — | — |
| 572-568 | OKLA CITY | 516J | 2021-04-12 | Yes |
| 572-572 | OKLA CITY | 409F | 2023-05-15 | Yes |
| 572-600 | MAUD | 145J | 2021-03-26 | Yes |
| 572-611 | XXXXXXXXXX | MULT | — | — |
| 572-633 | MIDWEST CY | 516J | 2022-03-02 | Yes |
| 572-666 | EL RENO | 965H | 2021-03-26 | Yes |
| 572-700 | — | — | ||
| 572-711 | XXXXXXXXXX | MULT | — | — |
| 572-726 | ANADARKO | 516J | 2022-02-24 | Yes |
| 572-732 | WYNNEWOOD | 409F | 2022-12-29 | Yes |
| 572-742 | MEEKER | 409F | 2022-12-29 | Yes |
| 572-746 | BRITTON | 516J | 2022-02-25 | Yes |
| 572-777 | HARRAH | 733J | 2021-03-26 | Yes |
| 572-800 | WELLSTON | 965H | 2021-03-26 | Yes |
| 572-811 | XXXXXXXXXX | MULT | — | — |
| 572-832 | MUSTANG | 516J | 2022-02-24 | Yes |
| 572-867 | MOORE | 939H | 2022-10-11 | Yes |
| 572-888 | PIEDMONT | 965H | 2021-03-26 | Yes |
| 572-900 | MERIDIAN | 965H | 2021-03-26 | Yes |
| 572-910 | OKLA CITY | 409F | 2021-04-16 | Yes |
| 572-911 | XXXXXXXXXX | MULT | — | — |
| 572-950 | — | — | ||
| 572-958 | — | — | ||
| 572-959 | — | — | ||
| 572-976 | — | — | ||
| 572-997 | KINGFISHER | 5813 | 2025-10-31 | Yes |
| 572-998 | OKLA CITY | 5813 | 2025-07-02 | Yes |
| 572-999 | GUTHRIE | 965H | 2021-03-26 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.