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27 prefixes in 918 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 918-203 | FORTGIBSON | 5257 | — | Yes |
| 918-219 | AFTON | 5257 | — | Yes |
| 918-506 | TAHLEQUAH | 5257 | — | Yes |
| 918-547 | TULSA | 5257 | — | — |
| 918-552 | STIGLER | 5257 | — | Yes |
| 918-558 | MCALESTER | 5257 | — | Yes |
| 918-559 | NOWATA | 5257 | — | Yes |
| 918-578 | SKIATOOK | 5257 | 2004-05-04 | Yes |
| 918-602 | COLLINSVL | 5257 | 2004-06-09 | Yes |
| 918-604 | PAWHUSKA | 5257 | — | Yes |
| 918-608 | MUSKOGEE | 5257 | 2001-05-07 | Yes |
| 918-612 | SPIRO | 5257 | — | Yes |
| 918-731 | DEPEW | 5257 | 2004-04-13 | Yes |
| 918-770 | TULSA | 5257 | 2001-11-27 | Yes |
| 918-771 | BRISTOW | 5257 | 2004-04-13 | Yes |
| 918-779 | TULSA | 5257 | — | Yes |
| 918-792 | RED OAK | 5257 | 2018-06-21 | Yes |
| 918-803 | PRYOR | 5257 | 2002-04-26 | Yes |
| 918-819 | NEW HOME | 5257 | 2002-06-05 | Yes |
| 918-844 | DRUMRIGHT | 5257 | 2002-06-05 | Yes |
| 918-876 | BARTLESVL | 5257 | 2001-11-27 | Yes |
| 918-913 | MUSKOGEE | 5257 | 2001-11-27 | Yes |
| 918-917 | WILBURTON | 5257 | 2002-10-08 | Yes |
| 918-919 | MIAMI | 5257 | 2002-06-27 | Yes |
| 918-941 | KELLYVILLE | 5257 | 2015-10-19 | Yes |
| 918-992 | TULSA | 5257 | — | Yes |
| 918-994 | BROKENARRW | 5257 | 2008-05-13 | 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.