SOUTHWESTERN BELL
307 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-203 | DALLAS | 9533 | — | Yes |
| 972-204 | DALLAS | 9533 | — | Yes |
| 972-206 | GRANDPRARI | 9533 | — | Yes |
| 972-216 | DALLAS | 9533 | — | Yes |
| 972-217 | DE SOTO | 9533 | — | Yes |
| 972-218 | DALLAS | 9533 | — | Yes |
| 972-222 | DALLAS | 9533 | — | — |
| 972-223 | DE SOTO | 9533 | — | — |
| 972-224 | DALLAS | 9533 | — | — |
| 972-225 | DALLAS | 9533 | — | — |
| 972-226 | DALLAS | 9533 | — | — |
| 972-227 | DALLAS | 9533 | — | — |
| 972-228 | DALLAS | 9533 | — | — |
| 972-230 | DE SOTO | 9533 | — | — |
| 972-231 | DALLAS | 9533 | — | — |
| 972-233 | DALLAS | 9533 | — | — |
| 972-234 | DALLAS | 9533 | — | — |
| 972-235 | DALLAS | 9533 | — | — |
| 972-237 | GRANDPRARI | 9533 | — | — |
| 972-238 | DALLAS | 9533 | — | — |
| 972-239 | DALLAS | 9533 | — | — |
| 972-241 | DALLAS | 9533 | — | — |
| 972-243 | DALLAS | 9533 | — | — |
| 972-247 | DALLAS | 9533 | — | — |
| 972-248 | DALLAS | 9533 | — | — |
| 972-250 | DALLAS | 9533 | — | — |
| 972-260 | GRANDPRARI | 9533 | — | — |
| 972-262 | GRANDPRARI | 9533 | — | — |
| 972-263 | GRANDPRARI | 9533 | — | — |
| 972-264 | GRANDPRARI | 9533 | — | — |
| 972-266 | GRANDPRARI | 9533 | — | Yes |
| 972-267 | DALLAS | 9533 | — | Yes |
| 972-269 | GRANDPRARI | 9533 | — | Yes |
| 972-270 | DALLAS | 9533 | — | — |
| 972-274 | DE SOTO | 9533 | — | — |
| 972-275 | DALLAS | 9533 | — | Yes |
| 972-277 | DALLAS | 9533 | — | Yes |
| 972-279 | DALLAS | 9533 | — | — |
| 972-280 | DALLAS | 9533 | — | Yes |
| 972-282 | GRANDPRARI | 9533 | — | Yes |
| 972-283 | DALLAS | 9533 | — | — |
| 972-284 | DALLAS | 9533 | — | Yes |
| 972-285 | DALLAS | 9533 | — | — |
| 972-286 | DALLAS | 9533 | — | — |
| 972-287 | SEAGOVILLE | 9533 | — | — |
| 972-288 | DALLAS | 9533 | — | — |
| 972-289 | DALLAS | 9533 | — | — |
| 972-290 | DALLAS | 9533 | — | Yes |
| 972-291 | CEDAR HILL | 9533 | — | — |
| 972-292 | FRISCO | 9533 | — | Yes |
| 972-293 | CEDAR HILL | 9533 | — | — |
| 972-294 | FRISCO | 9533 | — | Yes |
| 972-296 | DALLAS | 9533 | — | — |
| 972-298 | DALLAS | 9533 | — | — |
| 972-299 | CEDAR HILL | 9533 | — | Yes |
| 972-301 | DALLAS | 9533 | — | Yes |
| 972-329 | DALLAS | 9533 | — | — |
| 972-334 | FRISCO | 9533 | — | — |
| 972-335 | FRISCO | 9533 | — | — |
| 972-336 | GRANDPRARI | 9533 | — | Yes |
| 972-337 | GRANDPRARI | 9533 | — | — |
| 972-338 | DALLAS | 9533 | — | Yes |
| 972-339 | GRANDPRARI | 9533 | — | Yes |
| 972-340 | DALLAS | 9533 | — | — |
| 972-341 | DALLAS | 9533 | — | Yes |
| 972-343 | GRANDPRARI | 9533 | — | Yes |
| 972-344 | DALLAS | 9533 | — | — |
| 972-346 | PROSPER | 9533 | — | Yes |
| 972-347 | PROSPER | 9533 | — | Yes |
| 972-348 | DALLAS | 9533 | — | Yes |
| 972-349 | DALLAS | 9533 | — | Yes |
| 972-351 | WAXAHACHIE | 9533 | 2001-04-19 | Yes |
| 972-352 | GRANDPRARI | 9533 | — | Yes |
| 972-359 | ALLEN | 9533 | — | Yes |
| 972-361 | DALLAS | 9533 | — | — |
| 972-362 | DALLAS | 9533 | — | Yes |
| 972-364 | DALLAS | 9533 | — | Yes |
| 972-368 | DALLAS | 9533 | — | — |
| 972-369 | MCKINNEY | 9533 | — | Yes |
| 972-370 | FRISCO | 9533 | — | Yes |
| 972-371 | DALLAS | 9533 | — | Yes |
| 972-373 | DALLAS | 9533 | — | Yes |
| 972-376 | DALLAS | 9533 | — | — |
| 972-377 | FRISCO | 9533 | — | — |
| 972-380 | DALLAS | 9533 | — | — |
| 972-381 | DALLAS | 9533 | — | Yes |
| 972-382 | CELINA | 9533 | — | Yes |
| 972-383 | DALLAS | 9533 | — | Yes |
| 972-385 | DALLAS | 9533 | — | — |
| 972-386 | DALLAS | 9533 | — | — |
| 972-387 | DALLAS | 9533 | — | — |
| 972-388 | DALLAS | 9533 | — | Yes |
| 972-390 | ALLEN | 9533 | — | — |
| 972-391 | DALLAS | 9533 | — | Yes |
| 972-392 | DALLAS | 9533 | — | — |
| 972-396 | ALLEN | 9533 | — | — |
| 972-401 | DALLAS | 9533 | — | — |
| 972-402 | DALLAS | 9533 | — | Yes |
| 972-404 | DALLAS | 9533 | — | Yes |
| 972-405 | DALLAS | 9533 | — | — |
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.