All assignees
766 prefixes in 346 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 346-300 | BAMMEL | 903C | 2015-03-26 | Yes |
| 346-301 | SPLENDORA | 004F | 2015-01-21 | Yes |
| 346-302 | HSTNSUBURB | 6534 | 2015-06-24 | Yes |
| 346-303 | HOUSTON | 6701 | 2015-08-20 | Yes |
| 346-304 | STAFFORD | 318J | 2015-07-28 | Yes |
| 346-305 | SPRING | 9533 | 2015-05-07 | Yes |
| 346-306 | LANGHAMCRK | 903C | 2018-02-05 | Yes |
| 346-307 | KATY | 7239 | 2015-08-19 | Yes |
| 346-308 | HOUSTON | 177F | 2015-09-28 | Yes |
| 346-309 | SUGAR LAND | 318J | 2015-09-28 | Yes |
| 346-310 | HOUSTON | 6506 | 2016-01-12 | Yes |
| 346-311 | XXXXXXXXXX | MULT | — | — |
| 346-312 | HSTNSUBURB | 516C | 2015-06-24 | Yes |
| 346-313 | HSTNSUBURB | 6534 | 2015-06-24 | Yes |
| 346-314 | SATSUMA | 004F | 2015-08-10 | Yes |
| 346-315 | DEER PARK | 6534 | 2015-11-12 | Yes |
| 346-316 | BAMMEL | 6534 | 2015-12-16 | Yes |
| 346-317 | HOUSTON | 6701 | 2015-11-24 | Yes |
| 346-318 | ALVIN | 004F | 2018-03-12 | Yes |
| 346-319 | HOUSTON | 318J | 2015-12-17 | Yes |
| 346-320 | HOUSTON | 6701 | 2015-11-25 | Yes |
| 346-321 | CHANNELVW | 6534 | 2015-12-29 | Yes |
| 346-322 | BARKER | 903C | 2017-12-20 | Yes |
| 346-323 | HUMBLE | 2114 | 2016-03-30 | Yes |
| 346-324 | HOUSTON | 6506 | 2018-03-13 | Yes |
| 346-325 | SATSUMA | 6534 | 2018-03-21 | Yes |
| 346-326 | HOUSTON | 903C | 2018-02-06 | Yes |
| 346-327 | HOUSTON | 004F | 2018-03-22 | Yes |
| 346-328 | SPRING | 7138 | 2018-03-23 | Yes |
| 346-329 | BAMMEL | 6701 | 2018-03-26 | Yes |
| 346-330 | HOUSTON | 6506 | 2016-11-18 | Yes |
| 346-331 | SPRING | 318J | 2015-07-17 | Yes |
| 346-332 | CYPRESS | 903C | 2018-02-22 | Yes |
| 346-333 | LANGHAMCRK | 319D | 2014-01-15 | Yes |
| 346-334 | SPRING | 6506 | 2018-04-17 | Yes |
| 346-335 | HOUSTON | 318J | 2018-04-17 | Yes |
| 346-336 | TOMBALL | 792K | 2016-08-30 | Yes |
| 346-337 | CYPRESS | 6506 | 2018-04-19 | Yes |
| 346-338 | VLY LODGE | 004F | 2018-05-07 | Yes |
| 346-339 | HOUSTON | 6506 | 2018-05-15 | Yes |
| 346-340 | HSTNSUBURB | 903C | 2015-12-08 | Yes |
| 346-341 | STAFFORD | 318J | 2018-05-29 | Yes |
| 346-342 | HSTNSUBURB | 318J | 2018-05-29 | Yes |
| 346-343 | SUGAR LAND | 2147 | 2018-05-17 | Yes |
| 346-344 | CROSBY | 903C | — | Yes |
| 346-345 | HUMBLE | 6534 | 2018-06-27 | Yes |
| 346-346 | FRIENDSWD | 473F | 2023-01-25 | Yes |
| 346-347 | ALVIN | 073H | — | Yes |
| 346-348 | HOUSTON | 004F | 2018-07-02 | Yes |
| 346-349 | CHANNELVW | 6701 | 2018-07-17 | Yes |
| 346-350 | SUGAR LAND | 6534 | 2018-07-19 | Yes |
| 346-351 | SPRING | 792K | 2016-05-25 | Yes |
| 346-352 | HOUSTON | 516C | 2016-04-20 | Yes |
| 346-353 | HOUSTON | 996H | 2018-07-24 | Yes |
| 346-354 | HOUSTON | 177F | — | Yes |
| 346-355 | HOUSTON | 597F | 2018-08-14 | Yes |
| 346-356 | HOUSTON | 6114 | 2018-07-23 | Yes |
| 346-357 | HSTNSUBURB | 6534 | 2018-08-21 | Yes |
| 346-358 | LEAGUECITY | 903C | 2018-08-30 | Yes |
| 346-359 | LIVERPOOL | 903C | 2018-08-30 | Yes |
| 346-360 | BAMMEL | 6701 | 2016-12-12 | Yes |
| 346-361 | SEABROOK | 903C | 2018-08-30 | Yes |
| 346-362 | SHELDON | 903C | 2018-08-30 | Yes |
| 346-363 | SATSUMA | 6534 | 2018-09-06 | Yes |
| 346-364 | CLEVELAND | 6506 | 2018-09-14 | Yes |
| 346-365 | BARKER | 7138 | 2018-09-21 | Yes |
| 346-366 | LANGHAMCRK | 6506 | 2018-10-03 | Yes |
| 346-367 | TOMBALL | 6534 | 2018-10-04 | Yes |
| 346-368 | SUGAR LAND | 2091 | 2016-03-03 | Yes |
| 346-369 | BEACH CITY | 5562 | 2018-10-18 | Yes |
| 346-370 | SPRING | 6701 | 2018-10-11 | Yes |
| 346-371 | STAFFORD | 5562 | 2018-10-18 | Yes |
| 346-372 | SPRING | 7239 | 2018-10-18 | Yes |
| 346-373 | CHANNELVW | 177F | 2018-10-29 | Yes |
| 346-374 | HSTNSUBURB | 197D | 2018-12-17 | Yes |
| 346-375 | SUGAR LAND | 6534 | 2018-12-20 | Yes |
| 346-376 | SATSUMA | 7138 | 2019-01-08 | Yes |
| 346-377 | LANGHAMCRK | 6534 | 2019-01-17 | Yes |
| 346-378 | HSTNSUBURB | 7138 | 2019-01-18 | Yes |
| 346-379 | CYPRESS | 6534 | 2019-01-23 | Yes |
| 346-380 | SPRING | 6701 | 2019-01-24 | Yes |
| 346-381 | HSTNSUBURB | 597F | 2019-01-24 | Yes |
| 346-382 | SPRING | 597F | 2019-01-24 | Yes |
| 346-383 | HOUSTON | 6701 | — | Yes |
| 346-384 | APOLLO | 7138 | 2019-03-21 | Yes |
| 346-385 | FRIENDSWD | 318J | 2019-03-27 | Yes |
| 346-386 | SPRING | 004F | 2019-04-17 | Yes |
| 346-387 | KATY | 2091 | 2016-02-24 | Yes |
| 346-388 | HOUSTON | 004F | 2019-07-23 | Yes |
| 346-389 | BEACH CITY | 318J | 2019-07-26 | Yes |
| 346-390 | BARKER | 5562 | 2019-08-19 | Yes |
| 346-391 | SUGAR LAND | 5562 | 2019-08-19 | Yes |
| 346-392 | SATSUMA | 5562 | 2019-08-19 | Yes |
| 346-393 | STAFFORD | 5562 | 2019-08-19 | Yes |
| 346-394 | CHANNELVW | 5562 | 2019-08-19 | Yes |
| 346-395 | HOUSTON | 6701 | 2019-09-11 | Yes |
| 346-396 | HOUSTON | 177F | 2019-09-18 | Yes |
| 346-397 | HOUSTON | 7138 | 2019-08-08 | Yes |
| 346-398 | HOUSTON | 7239 | 2019-09-30 | Yes |
| 346-399 | BAMMEL | 6701 | 2019-10-17 | 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.