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81 prefixes in 737 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 737-200 | ELGIN | 903C | 2015-10-13 | Yes |
| 737-201 | TAYLOR | 903C | 2014-12-24 | Yes |
| 737-204 | AUSTIN | 903C | 2015-11-18 | Yes |
| 737-205 | AUSTIN | 903C | — | Yes |
| 737-210 | AUSTIN | 903C | 2013-10-23 | Yes |
| 737-214 | SAN MARCOS | 903C | 2017-04-14 | Yes |
| 737-237 | AUSTIN | 903C | 2018-02-06 | Yes |
| 737-241 | AUSTIN | 903C | 2017-08-16 | Yes |
| 737-245 | GEORGETOWN | 903C | 2018-02-26 | Yes |
| 737-247 | AUSTIN | 903C | — | Yes |
| 737-250 | MARTINDALE | 903C | 2018-02-22 | Yes |
| 737-260 | DRIPPNGSPG | 903C | 2018-02-26 | Yes |
| 737-271 | DRIPPNGSPG | 903C | — | Yes |
| 737-273 | AUSTIN | 903C | 2019-12-23 | Yes |
| 737-277 | AUSTIN | 903C | 2020-08-12 | Yes |
| 737-282 | DALE/LTNSP | 903C | 2021-01-07 | Yes |
| 737-283 | LOMETA | 903C | 2021-01-08 | Yes |
| 737-284 | WIMBERLEY | 903C | 2021-01-08 | Yes |
| 737-292 | AUSTIN | 903C | 2021-06-23 | Yes |
| 737-295 | AUSTIN | 903C | 2021-08-24 | Yes |
| 737-299 | LAMPASAS | 903C | 2018-02-26 | Yes |
| 737-300 | AUSTIN | 903C | 2015-03-25 | Yes |
| 737-307 | BERTRAM | 903C | 2020-12-28 | Yes |
| 737-312 | KYLE | 903C | 2021-11-02 | Yes |
| 737-316 | WIMBERLEY | 903C | 2023-07-28 | Yes |
| 737-317 | DRIPPNGSPG | 903C | 2020-12-28 | Yes |
| 737-325 | AUSTIN | 903C | 2023-09-13 | Yes |
| 737-327 | HUTTO | 903C | 2020-12-28 | Yes |
| 737-332 | BURNET | 903C | 2020-10-28 | Yes |
| 737-337 | FENTRESS | 903C | — | Yes |
| 737-338 | ELGIN | 903C | 2020-11-25 | Yes |
| 737-344 | SAN MARCOS | 903C | 2020-10-28 | Yes |
| 737-361 | TAYLOR | 903C | 2023-09-29 | Yes |
| 737-366 | MILANO | 903C | 2020-11-16 | Yes |
| 737-367 | AUSTIN | 903C | 2023-12-12 | Yes |
| 737-372 | BUCHANNDAM | 903C | — | Yes |
| 737-379 | LEANDER | 903C | 2024-03-12 | Yes |
| 737-381 | AUSTIN | 903C | 2024-03-18 | Yes |
| 737-383 | GEORGETOWN | 903C | 2024-04-02 | Yes |
| 737-385 | ELGIN | 903C | 2024-04-10 | Yes |
| 737-387 | SAN MARCOS | 903C | 2023-02-17 | Yes |
| 737-388 | KYLE | 903C | 2024-04-10 | Yes |
| 737-390 | BASTROP | 903C | 2024-05-29 | Yes |
| 737-391 | HUTTO | 903C | 2024-06-06 | Yes |
| 737-400 | AUSTIN | 903C | 2015-10-13 | Yes |
| 737-409 | AUSTIN | 903C | 2025-01-09 | Yes |
| 737-418 | AUSTIN | 903C | 2025-04-08 | Yes |
| 737-427 | MCDADE | 903C | 2020-12-28 | Yes |
| 737-432 | LEANDER | 903C | 2025-12-11 | Yes |
| 737-434 | AUSTIN | 903C | 2026-02-18 | Yes |
| 737-436 | BUDA | 903C | 2026-06-30 | Yes |
| 737-437 | THORNDTHRL | 903C | — | Yes |
| 737-439 | AUSTIN | 903C | 2026-06-30 | Yes |
| 737-441 | GEORGETOWN | 903C | 2026-08-06 | Yes |
| 737-450 | LOCKHART | 903C | 2025-12-17 | Yes |
| 737-473 | SANGABRIEL | 903C | 2020-12-28 | Yes |
| 737-497 | AUSTIN | 903C | 2023-01-09 | Yes |
| 737-500 | BASTROP | 903C | 2019-07-25 | Yes |
| 737-510 | BERTRAM | 903C | 2019-07-25 | Yes |
| 737-520 | FENTRESS | 903C | 2019-07-25 | Yes |
| 737-529 | AUSTIN | 903C | 2015-02-02 | Yes |
| 737-530 | LOMETA | 903C | 2019-07-25 | Yes |
| 737-537 | LAMPASAS | 903C | — | Yes |
| 737-600 | AUSTIN | 903C | 2015-04-14 | Yes |
| 737-610 | AUSTIN | 903C | — | Yes |
| 737-615 | AUSTIN | 903C | — | Yes |
| 737-637 | THORNDTHRL | 903C | 2018-08-21 | Yes |
| 737-677 | SMITHVILLE | 903C | 2020-12-28 | Yes |
| 737-703 | AUSTIN | 903C | — | Yes |
| 737-717 | AUSTIN | 903C | 2016-01-18 | Yes |
| 737-727 | MCDADE | 903C | 2018-08-21 | Yes |
| 737-734 | LIBERTY HL | 903C | — | Yes |
| 737-738 | GEORGETOWN | 903C | 2021-02-02 | Yes |
| 737-773 | JARRELL | 903C | — | Yes |
| 737-800 | AUSTIN | 903C | 2015-01-28 | Yes |
| 737-837 | TAYLOR | 903C | 2018-08-21 | Yes |
| 737-910 | AUSTIN | 903C | 2020-12-08 | Yes |
| 737-932 | AUSTIN | 903C | — | Yes |
| 737-937 | MARTINDALE | 903C | 2020-12-28 | Yes |
| 737-975 | AUSTIN | 903C | 2024-10-14 | Yes |
| 737-998 | AUSTIN | 903C | 2026-08-06 | 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.