SOUTHWESTERN BELL
281 prefixes in 210 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 210-201 | SANANTONIO | 9533 | 2011-10-07 | Yes |
| 210-206 | SANANTONIO | 9533 | — | — |
| 210-207 | SANANTONIO | 9533 | — | — |
| 210-208 | SANANTONIO | 9533 | — | — |
| 210-212 | SANANTONIO | 9533 | — | — |
| 210-220 | SANANTONIO | 9533 | — | — |
| 210-222 | SANANTONIO | 9533 | — | — |
| 210-223 | SANANTONIO | 9533 | — | — |
| 210-224 | SANANTONIO | 9533 | — | — |
| 210-225 | SANANTONIO | 9533 | — | Yes |
| 210-226 | SANANTONIO | 9533 | — | — |
| 210-227 | SANANTONIO | 9533 | — | — |
| 210-228 | SANANTONIO | 9533 | — | — |
| 210-229 | SANANTONIO | 9533 | — | Yes |
| 210-230 | SANANTONIO | 9533 | — | — |
| 210-231 | SANANTONIO | 9533 | — | Yes |
| 210-233 | SANANTONIO | 9533 | — | Yes |
| 210-235 | SANANTONIO | 9533 | — | — |
| 210-242 | SANANTONIO | 9533 | — | — |
| 210-244 | SANANTONIO | 9533 | — | Yes |
| 210-246 | SANANTONIO | 9533 | — | Yes |
| 210-250 | SANANTONIO | 9533 | — | Yes |
| 210-255 | SANANTONIO | 9533 | — | Yes |
| 210-256 | SANANTONIO | 9533 | — | Yes |
| 210-257 | SANANTONIO | 9533 | — | Yes |
| 210-258 | SANANTONIO | 9533 | — | — |
| 210-259 | SANANTONIO | 9533 | — | Yes |
| 210-261 | SANANTONIO | 9533 | — | — |
| 210-263 | SANANTONIO | 9533 | — | Yes |
| 210-265 | SANANTONIO | 9533 | — | Yes |
| 210-267 | SANANTONIO | 9533 | — | Yes |
| 210-270 | SANANTONIO | 9533 | — | — |
| 210-271 | SANANTONIO | 9533 | — | — |
| 210-272 | SANANTONIO | 9533 | — | Yes |
| 210-276 | SANANTONIO | 9533 | — | Yes |
| 210-277 | SANANTONIO | 9533 | — | Yes |
| 210-281 | SANANTONIO | 9533 | — | Yes |
| 210-282 | SANANTONIO | 9533 | — | — |
| 210-283 | SANANTONIO | 9533 | — | — |
| 210-294 | SANANTONIO | 9533 | 2010-09-24 | Yes |
| 210-296 | SANANTONIO | 9533 | — | Yes |
| 210-297 | SANANTONIO | 9533 | — | — |
| 210-299 | SANANTONIO | 9533 | — | — |
| 210-302 | SANANTONIO | 9533 | — | Yes |
| 210-304 | SANANTONIO | 9533 | — | Yes |
| 210-308 | SANANTONIO | 9533 | — | — |
| 210-310 | SANANTONIO | 9533 | — | Yes |
| 210-321 | SANANTONIO | 9533 | — | Yes |
| 210-323 | SANANTONIO | 9533 | — | Yes |
| 210-333 | SANANTONIO | 9533 | — | — |
| 210-334 | SANANTONIO | 9533 | — | Yes |
| 210-335 | SANANTONIO | 9533 | — | — |
| 210-337 | SANANTONIO | 9533 | — | Yes |
| 210-340 | SANANTONIO | 9533 | — | — |
| 210-341 | SANANTONIO | 9533 | — | — |
| 210-342 | SANANTONIO | 9533 | — | — |
| 210-343 | SANANTONIO | 9533 | — | Yes |
| 210-344 | SANANTONIO | 9533 | — | — |
| 210-345 | SANANTONIO | 9533 | — | — |
| 210-348 | SANANTONIO | 9533 | — | Yes |
| 210-349 | SANANTONIO | 9533 | — | — |
| 210-351 | SANANTONIO | 9533 | — | — |
| 210-352 | SANANTONIO | 9533 | — | Yes |
| 210-353 | SANANTONIO | 9533 | — | — |
| 210-354 | SANANTONIO | 9533 | — | Yes |
| 210-356 | SANANTONIO | 9533 | 2008-04-29 | Yes |
| 210-357 | SANANTONIO | 9533 | — | — |
| 210-358 | SANANTONIO | 9533 | — | — |
| 210-359 | SANANTONIO | 9533 | — | — |
| 210-360 | SANANTONIO | 9533 | — | Yes |
| 210-362 | SANANTONIO | 9533 | — | Yes |
| 210-366 | SANANTONIO | 9533 | — | — |
| 210-368 | SANANTONIO | 9533 | — | Yes |
| 210-369 | SANANTONIO | 9533 | — | Yes |
| 210-370 | SANANTONIO | 9533 | — | Yes |
| 210-372 | SANANTONIO | 9533 | 2001-09-18 | Yes |
| 210-375 | SANANTONIO | 9533 | — | Yes |
| 210-377 | SANANTONIO | 9533 | — | — |
| 210-384 | SANANTONIO | 9533 | — | Yes |
| 210-396 | SANANTONIO | 9533 | — | Yes |
| 210-397 | SANANTONIO | 9533 | — | — |
| 210-402 | SANANTONIO | 9533 | — | — |
| 210-403 | SANANTONIO | 9533 | — | — |
| 210-404 | SANANTONIO | 9533 | — | Yes |
| 210-407 | SANANTONIO | 9533 | 2008-04-29 | Yes |
| 210-408 | SANANTONIO | 9533 | — | — |
| 210-423 | SANANTONIO | 9533 | 2005-06-27 | Yes |
| 210-431 | SANANTONIO | 9533 | — | — |
| 210-432 | SANANTONIO | 9533 | — | Yes |
| 210-433 | SANANTONIO | 9533 | — | — |
| 210-434 | SANANTONIO | 9533 | — | Yes |
| 210-435 | SANANTONIO | 9533 | — | Yes |
| 210-436 | SANANTONIO | 9533 | — | Yes |
| 210-437 | SANANTONIO | 9533 | — | Yes |
| 210-438 | SANANTONIO | 9533 | — | Yes |
| 210-442 | SANANTONIO | 9533 | — | Yes |
| 210-443 | SANANTONIO | 9533 | — | — |
| 210-444 | SANANTONIO | 9533 | — | Yes |
| 210-450 | SANANTONIO | 9533 | 2006-05-12 | Yes |
| 210-456 | SANANTONIO | 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.