Phone numbers in San Antonio, Texas
San Antonio has 898 phone prefixes in area codes 210, 726, 830.
Biggest holders: AT&T (local phone), AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 36%
- Local phone company 32%
- Internet / business phone carrier 27%
- Paging service 2%
- Phone company 3%
Every prefix in San Antonio
Search the first six digits of a number in this list. If it's here, the number started in San Antonio with the carrier shown. If it isn't, check the Texas page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 210-200 | AT&T (local phone) | Local phone company | – |
| 210-201 | AT&T (local phone) | Local phone company | 2011 |
| 210-202 | Verizon Wireless | Mobile carrier | 2012 |
| 210-203 | American Messaging Services | Paging service | – |
| 210-204 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 210-205 | American Messaging Services | Paging service | – |
| 210-206 | AT&T (local phone) | Local phone company | – |
| 210-207 | AT&T (local phone) | Local phone company | – |
| 210-208 | AT&T (local phone) | Local phone company | – |
| 210-209 | AT&T Mobility | Mobile carrier | 2007 |
| 210-210 | Usfon | Phone company | 2023 |
| 210-212 | AT&T (local phone) | Local phone company | – |
| 210-213 | AT&T Mobility | Mobile carrier | – |
| 210-214 | AT&T Mobility | Mobile carrier | 2007 |
| 210-215 | AT&T Mobility | Mobile carrier | – |
| 210-216 | AT&T Mobility | Mobile carrier | – |
| 210-217 | American Messaging Services | Paging service | – |
| 210-218 | AT&T Mobility | Mobile carrier | – |
| 210-219 | AT&T Mobility | Mobile carrier | – |
| 210-220 | AT&T (local phone) | Local phone company | – |
| 210-221 | Level 3 (Lumen) | Internet / business phone carrier | 2003 |
| 210-222 | AT&T (local phone) | Local phone company | – |
| 210-223 | AT&T (local phone) | Local phone company | – |
| 210-224 | AT&T (local phone) | Local phone company | – |
| 210-225 | AT&T (local phone) | Local phone company | – |
| 210-226 | AT&T (local phone) | Local phone company | – |
| 210-227 | AT&T (local phone) | Local phone company | – |
| 210-228 | AT&T (local phone) | Local phone company | – |
| 210-229 | AT&T (local phone) | Local phone company | – |
| 210-230 | AT&T (local phone) | Local phone company | – |
| 210-231 | AT&T (local phone) | Local phone company | – |
| 210-232 | AT&T Mobility | Mobile carrier | 2002 |
| 210-233 | AT&T (local phone) | Local phone company | – |
| 210-234 | MCImetro (Verizon Business) | Internet / business phone carrier | 2003 |
| 210-235 | AT&T (local phone) | Local phone company | – |
| 210-236 | Teleport Communications America | Internet / business phone carrier | 2010 |
| 210-237 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 210-238 | Verizon Wireless | Mobile carrier | 2011 |
| 210-239 | Foremost Telecommunications | Phone company | 2006 |
| 210-240 | AT&T Mobility | Mobile carrier | – |
| 210-241 | AT&T Mobility | Mobile carrier | – |
| 210-242 | AT&T (local phone) | Local phone company | – |
| 210-243 | Verizon Wireless | Mobile carrier | 2011 |
| 210-244 | AT&T (local phone) | Local phone company | – |
| 210-245 | Verizon Wireless | Mobile carrier | 2011 |
| 210-246 | AT&T (local phone) | Local phone company | – |
| 210-247 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-248 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-249 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-250 | AT&T (local phone) | Local phone company | – |
| 210-251 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 210-253 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-254 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-255 | AT&T (local phone) | Local phone company | – |
| 210-256 | AT&T (local phone) | Local phone company | – |
| 210-257 | AT&T (local phone) | Local phone company | – |
| 210-258 | AT&T (local phone) | Local phone company | – |
| 210-259 | AT&T (local phone) | Local phone company | – |
| 210-260 | AT&T Mobility | Mobile carrier | – |
| 210-261 | AT&T (local phone) | Local phone company | – |
| 210-262 | AT&T Mobility | Mobile carrier | 2001 |
| 210-263 | AT&T (local phone) | Local phone company | – |
| 210-264 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-265 | AT&T (local phone) | Local phone company | – |
| 210-266 | American Messaging Services | Paging service | 2001 |
| 210-267 | AT&T (local phone) | Local phone company | – |
| 210-268 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-269 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 210-270 | AT&T (local phone) | Local phone company | – |
| 210-271 | AT&T (local phone) | Local phone company | – |
| 210-272 | AT&T (local phone) | Local phone company | – |
| 210-273 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-274 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 210-275 | AT&T Mobility | Mobile carrier | – |
| 210-276 | AT&T (local phone) | Local phone company | – |
| 210-277 | AT&T (local phone) | Local phone company | – |
| 210-278 | Teleport Communications America | Internet / business phone carrier | 2007 |
| 210-279 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-280 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-281 | AT&T (local phone) | Local phone company | – |
| 210-282 | AT&T (local phone) | Local phone company | – |
| 210-283 | AT&T (local phone) | Local phone company | – |
| 210-284 | AT&T Mobility | Mobile carrier | 2010 |
| 210-285 | Spok | Paging service | – |
| 210-286 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-287 | AT&T Mobility | Mobile carrier | – |
| 210-288 | AT&T Mobility | Mobile carrier | – |
| 210-289 | AT&T Mobility | Mobile carrier | – |
| 210-290 | AT&T Mobility | Mobile carrier | – |
| 210-291 | AT&T Mobility | Mobile carrier | 2007 |
| 210-292 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-293 | Onvoy | Internet / business phone carrier | – |
| 210-294 | AT&T (local phone) | Local phone company | 2010 |
| 210-295 | Level 3 (Lumen) | Internet / business phone carrier | 2003 |
| 210-296 | AT&T (local phone) | Local phone company | – |
| 210-297 | AT&T (local phone) | Local phone company | – |
| 210-298 | Onvoy | Internet / business phone carrier | – |
| 210-299 | AT&T (local phone) | Local phone company | – |
| 210-300 | AT&T Mobility | Mobile carrier | 2006 |
| 210-301 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-302 | AT&T (local phone) | Local phone company | – |
| 210-303 | AT&T Mobility | Mobile carrier | 2007 |
| 210-304 | AT&T (local phone) | Local phone company | – |
| 210-305 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 210-306 | MCImetro (Verizon Business) | Internet / business phone carrier | 2011 |
| 210-307 | AT&T Mobility | Mobile carrier | 2011 |
| 210-308 | AT&T (local phone) | Local phone company | – |
| 210-309 | AT&T Mobility | Mobile carrier | 2009 |
| 210-310 | AT&T (local phone) | Local phone company | – |
| 210-312 | Level 3 (Lumen) | Internet / business phone carrier | 2007 |
| 210-313 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 210-314 | Verizon Wireless | Mobile carrier | 2007 |
| 210-315 | AT&T Mobility | Mobile carrier | – |
| 210-316 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-317 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-318 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 210-319 | Verizon Wireless | Mobile carrier | 2007 |
| 210-320 | Grande Communications Networks | Phone company | – |
| 210-321 | AT&T (local phone) | Local phone company | – |
| 210-322 | AT&T Mobility | Mobile carrier | 2009 |
| 210-323 | AT&T (local phone) | Local phone company | – |
| 210-324 | AT&T Mobility | Mobile carrier | 2005 |
| 210-325 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-326 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-327 | MCImetro (Verizon Business) | Internet / business phone carrier | 2007 |
| 210-328 | Verizon Wireless | Mobile carrier | 2009 |
| 210-329 | Onvoy | Internet / business phone carrier | – |
| 210-330 | AT&T Mobility | Mobile carrier | 2006 |
| 210-331 | AT&T (local phone) | Local phone company | – |
| 210-332 | AT&T (local phone) | Local phone company | – |
| 210-333 | AT&T (local phone) | Local phone company | – |
| 210-334 | AT&T (local phone) | Local phone company | – |
| 210-335 | AT&T (local phone) | Local phone company | – |
| 210-336 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 210-337 | AT&T (local phone) | Local phone company | – |
| 210-338 | Bandwidth | Internet / business phone carrier | 2008 |
| 210-339 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-340 | AT&T (local phone) | Local phone company | – |
| 210-341 | AT&T (local phone) | Local phone company | – |
| 210-342 | AT&T (local phone) | Local phone company | – |
| 210-343 | AT&T (local phone) | Local phone company | – |
| 210-344 | AT&T (local phone) | Local phone company | – |
| 210-345 | AT&T (local phone) | Local phone company | – |
| 210-346 | AT&T Enterprises | Phone company | – |
| 210-347 | Verizon Wireless | Mobile carrier | – |
| 210-348 | AT&T (local phone) | Local phone company | – |
| 210-349 | AT&T (local phone) | Local phone company | – |
| 210-350 | MCImetro (Verizon Business) | Internet / business phone carrier | 2015 |
| 210-351 | AT&T (local phone) | Local phone company | – |
| 210-352 | AT&T (local phone) | Local phone company | – |
| 210-353 | AT&T (local phone) | Local phone company | – |
| 210-354 | AT&T (local phone) | Local phone company | – |
| 210-355 | AT&T Mobility | Mobile carrier | – |
| 210-356 | AT&T (local phone) | Local phone company | 2008 |
| 210-357 | AT&T (local phone) | Local phone company | – |
| 210-358 | AT&T (local phone) | Local phone company | – |
| 210-359 | AT&T (local phone) | Local phone company | – |
| 210-360 | AT&T (local phone) | Local phone company | – |
| 210-361 | Onvoy | Internet / business phone carrier | 2015 |
| 210-362 | AT&T (local phone) | Local phone company | – |
| 210-363 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-364 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-365 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-366 | AT&T (local phone) | Local phone company | – |
| 210-367 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-368 | AT&T (local phone) | Local phone company | – |
| 210-369 | AT&T (local phone) | Local phone company | – |
| 210-370 | AT&T (local phone) | Local phone company | – |
| 210-371 | AT&T Mobility | Mobile carrier | 2009 |
| 210-372 | AT&T (local phone) | Local phone company | 2001 |
| 210-373 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-374 | AT&T Mobility | Mobile carrier | 2008 |
| 210-375 | AT&T (local phone) | Local phone company | – |
| 210-376 | Verizon Wireless | Mobile carrier | 2008 |
| 210-377 | AT&T (local phone) | Local phone company | – |
| 210-378 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-379 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-380 | Verizon Wireless | Mobile carrier | – |
| 210-381 | Verizon Wireless | Mobile carrier | – |
| 210-382 | Verizon Wireless | Mobile carrier | – |
| 210-383 | Verizon Wireless | Mobile carrier | – |
| 210-384 | AT&T (local phone) | Local phone company | – |
| 210-385 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-386 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-387 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-388 | XO Texas | Phone company | 2005 |
| 210-389 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-390 | Level 3 (Lumen) | Internet / business phone carrier | 2009 |
| 210-391 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-392 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-393 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-394 | AT&T Mobility | Mobile carrier | – |
| 210-395 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-396 | AT&T (local phone) | Local phone company | – |
| 210-397 | AT&T (local phone) | Local phone company | – |
| 210-398 | AT&T Mobility | Mobile carrier | 2009 |
| 210-399 | Level 3 (Lumen) | Internet / business phone carrier | 2009 |
| 210-400 | AT&T Mobility | Mobile carrier | 2006 |
| 210-401 | Onvoy | Internet / business phone carrier | 2008 |
| 210-402 | AT&T (local phone) | Local phone company | – |
| 210-403 | AT&T (local phone) | Local phone company | – |
| 210-404 | AT&T (local phone) | Local phone company | – |
| 210-405 | Onvoy | Internet / business phone carrier | 2015 |
| 210-406 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-407 | AT&T (local phone) | Local phone company | 2008 |
| 210-408 | AT&T (local phone) | Local phone company | – |
| 210-409 | AT&T Mobility | Mobile carrier | 2008 |
| 210-410 | AT&T Mobility | Mobile carrier | – |
| 210-412 | AT&T Mobility | Mobile carrier | 2005 |
| 210-413 | AT&T Mobility | Mobile carrier | – |
| 210-414 | AT&T Mobility | Mobile carrier | – |
| 210-415 | AT&T Mobility | Mobile carrier | – |
| 210-416 | AT&T Mobility | Mobile carrier | – |
| 210-417 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 210-418 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 210-419 | Verizon Wireless | Mobile carrier | 2012 |
| 210-420 | AT&T Mobility | Mobile carrier | 2009 |
| 210-421 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-422 | AT&T Mobility | Mobile carrier | – |
| 210-423 | AT&T (local phone) | Local phone company | 2005 |
| 210-424 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 210-425 | AT&T Mobility | Mobile carrier | 2009 |
| 210-426 | Verizon Wireless | Mobile carrier | 2007 |
| 210-427 | AT&T Mobility | Mobile carrier | 2010 |
| 210-428 | Verizon Wireless | Mobile carrier | 2009 |
| 210-429 | AT&T Mobility | Mobile carrier | 2009 |
| 210-430 | AT&T Mobility | Mobile carrier | 2006 |
| 210-431 | AT&T (local phone) | Local phone company | – |
| 210-432 | AT&T (local phone) | Local phone company | – |
| 210-433 | AT&T (local phone) | Local phone company | – |
| 210-434 | AT&T (local phone) | Local phone company | – |
| 210-435 | AT&T (local phone) | Local phone company | – |
| 210-436 | AT&T (local phone) | Local phone company | – |
| 210-437 | AT&T (local phone) | Local phone company | – |
| 210-438 | AT&T (local phone) | Local phone company | – |
| 210-439 | Verizon Wireless | Mobile carrier | 2010 |
| 210-440 | AT&T Mobility | Mobile carrier | 2006 |
| 210-441 | Verizon Wireless | Mobile carrier | 2010 |
| 210-442 | AT&T (local phone) | Local phone company | – |
| 210-443 | AT&T (local phone) | Local phone company | – |
| 210-444 | AT&T (local phone) | Local phone company | – |
| 210-445 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-446 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-447 | Tpx Communications | Internet / business phone carrier | – |
| 210-448 | Tpx Communications | Internet / business phone carrier | – |
| 210-449 | AT&T Mobility | Mobile carrier | 2007 |
| 210-450 | AT&T (local phone) | Local phone company | 2006 |
| 210-451 | AT&T Enterprises | Phone company | 2007 |
| 210-452 | AT&T Mobility | Mobile carrier | – |
| 210-453 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-454 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 210-455 | Charter / Spectrum | Internet / business phone carrier | – |
| 210-456 | AT&T (local phone) | Local phone company | – |
| 210-457 | Tpx Communications | Internet / business phone carrier | – |
| 210-458 | AT&T (local phone) | Local phone company | – |
| 210-459 | AT&T Mobility | Mobile carrier | 2008 |
| 210-460 | AT&T Mobility | Mobile carrier | 2010 |
| 210-461 | AT&T Mobility | Mobile carrier | 2008 |
| 210-462 | AT&T (local phone) | Local phone company | – |
| 210-463 | AT&T (local phone) | Local phone company | – |
| 210-464 | AT&T Mobility | Mobile carrier | 2006 |
| 210-465 | AT&T (local phone) | Local phone company | – |
| 210-466 | Level 3 (Lumen) | Internet / business phone carrier | 2010 |
| 210-467 | AT&T (local phone) | Local phone company | – |
| 210-468 | Verizon Wireless | Mobile carrier | 2009 |
| 210-469 | Bandwidth | Internet / business phone carrier | 2017 |
| 210-470 | AT&T (local phone) | Local phone company | – |
| 210-471 | AT&T (local phone) | Local phone company | – |
| 210-472 | AT&T (local phone) | Local phone company | – |
| 210-473 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-474 | AT&T (local phone) | Local phone company | – |
| 210-475 | AT&T (local phone) | Local phone company | – |
| 210-476 | AT&T (local phone) | Local phone company | – |
| 210-477 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-478 | AT&T (local phone) | Local phone company | – |
| 210-479 | AT&T (local phone) | Local phone company | – |
| 210-480 | AT&T Mobility | Mobile carrier | 2010 |
| 210-481 | AT&T (local phone) | Local phone company | – |
| 210-482 | AT&T (local phone) | Local phone company | – |
| 210-483 | AT&T (local phone) | Local phone company | – |
| 210-484 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-485 | Verizon Wireless | Mobile carrier | 2007 |
| 210-486 | AT&T (local phone) | Local phone company | 2008 |
| 210-487 | AT&T (local phone) | Local phone company | – |
| 210-488 | Onvoy | Internet / business phone carrier | – |
| 210-489 | AT&T (local phone) | Local phone company | – |
| 210-490 | AT&T (local phone) | Local phone company | – |
| 210-491 | AT&T (local phone) | Local phone company | – |
| 210-492 | AT&T (local phone) | Local phone company | – |
| 210-493 | AT&T (local phone) | Local phone company | – |
| 210-494 | AT&T (local phone) | Local phone company | – |
| 210-495 | AT&T (local phone) | Local phone company | – |
| 210-496 | AT&T (local phone) | Local phone company | – |
| 210-497 | AT&T (local phone) | Local phone company | – |
| 210-498 | AT&T (local phone) | Local phone company | – |
| 210-499 | AT&T (local phone) | Local phone company | – |
| 210-500 | Verizon Wireless | Mobile carrier | 2022 |
| 210-501 | AT&T Mobility | Mobile carrier | 2010 |
| 210-502 | AT&T Mobility | Mobile carrier | – |
| 210-503 | AT&T Enterprises | Phone company | 2014 |
| 210-504 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-505 | AT&T Mobility | Mobile carrier | 2010 |
| 210-506 | AT&T (local phone) | Local phone company | – |
| 210-507 | Teleport Communications America | Internet / business phone carrier | – |
| 210-508 | AT&T Mobility | Mobile carrier | – |
| 210-509 | AT&T (local phone) | Local phone company | – |
| 210-510 | Bandwidth | Internet / business phone carrier | 2012 |
| 210-512 | Onvoy | Internet / business phone carrier | 2023 |
| 210-513 | Spok | Paging service | – |
| 210-514 | Onvoy | Internet / business phone carrier | – |
| 210-515 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-516 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-517 | Verizon Wireless | Mobile carrier | 2012 |
| 210-518 | AT&T (local phone) | Local phone company | – |
| 210-519 | Onvoy | Internet / business phone carrier | 2008 |
| 210-520 | AT&T (local phone) | Local phone company | – |
| 210-521 | AT&T (local phone) | Local phone company | – |
| 210-522 | AT&T (local phone) | Local phone company | – |
| 210-523 | AT&T (local phone) | Local phone company | – |
| 210-524 | AT&T (local phone) | Local phone company | – |
| 210-525 | AT&T (local phone) | Local phone company | – |
| 210-526 | MCImetro (Verizon Business) | Internet / business phone carrier | 2010 |
| 210-527 | AT&T (local phone) | Local phone company | – |
| 210-528 | AT&T (local phone) | Local phone company | – |
| 210-529 | Foremost Telecommunications | Phone company | 2013 |
| 210-530 | AT&T (local phone) | Local phone company | – |
| 210-531 | AT&T (local phone) | Local phone company | – |
| 210-532 | AT&T (local phone) | Local phone company | – |
| 210-533 | AT&T (local phone) | Local phone company | – |
| 210-534 | AT&T (local phone) | Local phone company | – |
| 210-535 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-536 | Teleport Communications America | Internet / business phone carrier | – |
| 210-537 | Onvoy | Internet / business phone carrier | 2013 |
| 210-538 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 210-539 | Level 3 (Lumen) | Internet / business phone carrier | 2010 |
| 210-540 | Verizon Wireless | Mobile carrier | 2012 |
| 210-541 | AT&T (local phone) | Local phone company | – |
| 210-542 | AT&T Mobility | Mobile carrier | 2006 |
| 210-543 | AT&T (local phone) | Local phone company | – |
| 210-544 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 210-545 | AT&T (local phone) | Local phone company | – |
| 210-546 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-547 | Grande Communications Networks | Phone company | – |
| 210-548 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 210-549 | Charter / Spectrum | Internet / business phone carrier | 2010 |
| 210-550 | AT&T Mobility | Mobile carrier | 2006 |
| 210-551 | AT&T Mobility | Mobile carrier | 2011 |
| 210-552 | AT&T Mobility | Mobile carrier | 2015 |
| 210-553 | Spok | Paging service | – |
| 210-554 | AT&T (local phone) | Local phone company | – |
| 210-556 | MCImetro (Verizon Business) | Internet / business phone carrier | 2010 |
| 210-557 | AT&T Mobility | Mobile carrier | 2005 |
| 210-558 | AT&T (local phone) | Local phone company | – |
| 210-559 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-560 | AT&T Mobility | Mobile carrier | 2010 |
| 210-561 | AT&T (local phone) | Local phone company | – |
| 210-562 | AT&T (local phone) | Local phone company | – |
| 210-563 | Verizon Wireless | Mobile carrier | 2005 |
| 210-564 | AT&T (local phone) | Local phone company | – |
| 210-565 | AT&T (local phone) | Local phone company | – |
| 210-566 | AT&T (local phone) | Local phone company | – |
| 210-567 | AT&T (local phone) | Local phone company | – |
| 210-568 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-569 | Verizon Wireless | Mobile carrier | 2006 |
| 210-570 | Bandwidth | Internet / business phone carrier | 2012 |
| 210-571 | Bandwidth | Internet / business phone carrier | 2012 |
| 210-572 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-573 | T-Mobile (including Sprint) | Mobile carrier | – |
| 210-574 | MetroPCS (T-Mobile) | Mobile carrier | 2014 |
| 210-575 | AT&T (local phone) | Local phone company | – |
| 210-576 | Tpx Communications | Internet / business phone carrier | – |
| 210-577 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 210-578 | AT&T Mobility | Mobile carrier | 2024 |
| 210-579 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-580 | Windstream (PAETEC) | Internet / business phone carrier | 2017 |
| 210-581 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-582 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 210-583 | Level 3 (Lumen) | Internet / business phone carrier | 2016 |
| 210-584 | AT&T Mobility | Mobile carrier | 2006 |
| 210-585 | AT&T (local phone) | Local phone company | 2013 |
| 210-586 | AT&T (local phone) | Local phone company | – |
| 210-587 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 210-588 | AT&T (local phone) | Local phone company | – |
| 210-589 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 210-590 | AT&T (local phone) | Local phone company | – |
| 210-591 | Teleport Communications America | Internet / business phone carrier | 2007 |
| 210-592 | AT&T (local phone) | Local phone company | – |
| 210-593 | AT&T (local phone) | Local phone company | – |
| 210-594 | Onvoy | Internet / business phone carrier | 2024 |
| 210-595 | AT&T (local phone) | Local phone company | – |
| 210-596 | AT&T (local phone) | Local phone company | 2015 |
| 210-597 | Teleport Communications America | Internet / business phone carrier | 2017 |
| 210-598 | Charter / Spectrum | Internet / business phone carrier | 2011 |
| 210-599 | AT&T (local phone) | Local phone company | – |
| 210-600 | Onvoy | Internet / business phone carrier | 2015 |
| 210-601 | AT&T Mobility | Mobile carrier | – |
| 210-602 | AT&T Mobility | Mobile carrier | – |
| 210-603 | Spok | Paging service | – |
| 210-604 | Spok | Paging service | – |
| 210-605 | AT&T Mobility | Mobile carrier | 2009 |
Showing the first 400 of 898 prefixes.
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.