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56 prefixes in 405 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 405-266 | WANETTE | 409F | — | Yes |
| 405-276 | EL RENO | 409F | 2013-07-05 | Yes |
| 405-296 | CROMWELL | 409F | — | Yes |
| 405-299 | CALVIN | 409F | — | Yes |
| 405-335 | WYNNEWOOD | 409F | — | Yes |
| 405-336 | WELEETKA | 409F | — | Yes |
| 405-337 | WEWOKA | 409F | — | Yes |
| 405-342 | ARCADIA | 409F | — | Yes |
| 405-345 | EL RENO | 409F | — | Yes |
| 405-346 | GUTHRIE | 409F | — | Yes |
| 405-347 | HARRAH | 409F | — | Yes |
| 405-349 | LUTHER | 409F | — | Yes |
| 405-353 | MUSTANG | 409F | — | Yes |
| 405-355 | NOBLE | 409F | — | Yes |
| 405-357 | WHEATLAND | 409F | — | Yes |
| 405-358 | PIEDMONT | 409F | — | Yes |
| 405-362 | TUTTLE | 409F | — | Yes |
| 405-369 | MINCO | 409F | 2013-07-05 | Yes |
| 405-389 | WETUMKA | 409F | — | Yes |
| 405-393 | MAUD | 409F | — | Yes |
| 405-400 | OKLA CITY | 409F | 2015-11-24 | Yes |
| 405-405 | ALEX | 409F | 2025-12-22 | Yes |
| 405-407 | NOBLE | 409F | 2016-03-04 | Yes |
| 405-451 | WELLSTON | 409F | 2016-06-23 | Yes |
| 405-467 | YUKON | 409F | 2016-06-17 | Yes |
| 405-500 | OKLA CITY | 409F | 2015-08-13 | Yes |
| 405-507 | BRITTON | 409F | — | Yes |
| 405-516 | OKLA CITY | 409F | — | Yes |
| 405-526 | OKLA CITY | 409F | — | Yes |
| 405-529 | BRITTON | 409F | — | Yes |
| 405-536 | OKLA CITY | 409F | — | Yes |
| 405-578 | YUKON | 409F | 2013-07-05 | Yes |
| 405-594 | OKLA CITY | 409F | 2016-03-08 | Yes |
| 405-705 | EDMOND | 409F | — | Yes |
| 405-709 | BETHANY | 409F | — | Yes |
| 405-724 | OKLA CITY | 409F | 2017-06-15 | Yes |
| 405-731 | MIDWEST CY | 409F | 2013-07-05 | Yes |
| 405-764 | OKLA CITY | 409F | — | Yes |
| 405-766 | OKLA CITY | 409F | 2018-09-28 | Yes |
| 405-805 | YUKON | 409F | — | Yes |
| 405-807 | NICOMAPARK | 409F | — | Yes |
| 405-809 | NORMAN | 409F | — | Yes |
| 405-813 | OKLA CITY | 409F | — | Yes |
| 405-814 | MOORE | 409F | — | Yes |
| 405-870 | YUKON | 409F | 2021-03-08 | Yes |
| 405-873 | SHAWNEE | 409F | 2021-03-08 | Yes |
| 405-874 | NOBLE | 409F | 2020-12-31 | Yes |
| 405-875 | OKLA CITY | 409F | 2009-01-12 | Yes |
| 405-877 | GUTHRIE | 409F | 2016-03-03 | Yes |
| 405-896 | OKLA CITY | 409F | 2012-06-05 | Yes |
| 405-900 | OKLA CITY | 409F | 2015-09-18 | Yes |
| 405-914 | NORMAN | 409F | 2020-12-31 | Yes |
| 405-925 | SPENCER | 409F | 2016-06-22 | Yes |
| 405-937 | STILLWATER | 409F | 2016-06-17 | Yes |
| 405-993 | CHOCTAW | 409F | 2021-06-17 | Yes |
| 405-994 | BYARS | 409F | 2021-07-07 | 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.