Houston, TX — rate center
- State
- Texas
- Active prefixes
- 1,496
- Carriers
- 53
- Pooled prefixes
- 905
- LATA
- 560
- Metro area
- Houston-Pasadena-The Woodlands, TX MSA
The Houston rate center (Texas) anchors 1,496 active prefixes under area codes 281, 346, 713, 832. Rate centers, not city limits, are what phone numbers are legally tied to.
1,496 central-office prefixes are currently anchored to this rate center across 53 carriers. 905 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Houston-Pasadena-The Woodlands, TX Metropolitan Statistical Area. Routing-wise it sits in LATA 560.
Multiple area codes over one rate center (281/346/713/832) is the overlay pattern: same geography, different first three digits.
At 1,496 prefixes — a ceiling of 14,960,000 numbers — Houston is one of Texas's heavyweight rate centers.
Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.
Prefixes anchored to Houston
Showing 738 of 738
| Prefix | Code holder | Pooled |
|---|---|---|
| 713-200 | SPOK, INC. | No |
| 713-201 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-202 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-203 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-204 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-205 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-206 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-207 | SOUTHWESTERN BELL | No |
| 713-208 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-209 | SOUTHWESTERN BELL | No |
| 713-210 | SOUTHWESTERN BELL | Yes |
| 713-212 | SOUTHWESTERN BELL | Yes |
| 713-213 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-214 | SOUTHWESTERN BELL | No |
| 713-215 | SOUTHWESTERN BELL | No |
| 713-216 | SOUTHWESTERN BELL | No |
| 713-217 | SOUTHWESTERN BELL | No |
| 713-218 | SOUTHWESTERN BELL | No |
| 713-219 | SOUTHWESTERN BELL | Yes |
| 713-220 | SOUTHWESTERN BELL | No |
| 713-221 | SOUTHWESTERN BELL | Yes |
| 713-222 | SOUTHWESTERN BELL | No |
| 713-223 | SOUTHWESTERN BELL | No |
| 713-224 | SOUTHWESTERN BELL | No |
| 713-225 | SOUTHWESTERN BELL | No |
| 713-226 | SOUTHWESTERN BELL | Yes |
| 713-227 | SOUTHWESTERN BELL | No |
| 713-228 | SOUTHWESTERN BELL | Yes |
| 713-229 | SOUTHWESTERN BELL | No |
| 713-230 | SOUTHWESTERN BELL | Yes |
| 713-231 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-232 | SOUTHWESTERN BELL | Yes |
| 713-233 | SOUTHWESTERN BELL | No |
| 713-235 | SOUTHWESTERN BELL | Yes |
| 713-236 | SOUTHWESTERN BELL | No |
| 713-237 | SOUTHWESTERN BELL | No |
| 713-238 | SOUTHWESTERN BELL | No |
| 713-239 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-240 | AERIAL COMMUNICATIONS, INC. | No |
| 713-241 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-242 | SOUTHWESTERN BELL | Yes |
| 713-243 | SOUTHWESTERN BELL | No |
| 713-244 | SOUTHWESTERN BELL | Yes |
| 713-245 | SOUTHWESTERN BELL | Yes |
| 713-247 | SOUTHWESTERN BELL | Yes |
| 713-248 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-249 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-250 | SOUTHWESTERN BELL | Yes |
| 713-251 | SOUTHWESTERN BELL | Yes |
| 713-252 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-253 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-254 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-255 | ONVOY, LLC - TX | No |
| 713-256 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-257 | SOUTHWESTERN BELL | Yes |
| 713-258 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 713-259 | SOUTHWESTERN BELL | Yes |
| 713-260 | SOUTHWESTERN BELL | No |
| 713-261 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-262 | SOUTHWESTERN BELL | Yes |
| 713-263 | SOUTHWESTERN BELL | Yes |
| 713-264 | SOUTHWESTERN BELL | Yes |
| 713-265 | SOUTHWESTERN BELL | Yes |
| 713-266 | SOUTHWESTERN BELL | No |
| 713-267 | SOUTHWESTERN BELL | No |
| 713-268 | SOUTHWESTERN BELL | No |
| 713-269 | AERIAL COMMUNICATIONS, INC. | No |
| 713-270 | SOUTHWESTERN BELL | No |
| 713-271 | SOUTHWESTERN BELL | No |
| 713-272 | SOUTHWESTERN BELL | No |
| 713-273 | SOUTHWESTERN BELL | No |
| 713-274 | SOUTHWESTERN BELL | Yes |
| 713-275 | ONVOY, LLC - TX | No |
| 713-276 | SOUTHWESTERN BELL | No |
| 713-277 | SOUTHWESTERN BELL | Yes |
| 713-278 | SOUTHWESTERN BELL | No |
| 713-279 | SPOK, INC. | No |
| 713-283 | SOUTHWESTERN BELL | Yes |
| 713-284 | SOUTHWESTERN BELL | No |
| 713-285 | SOUTHWESTERN BELL | No |
| 713-286 | SOUTHWESTERN BELL | No |
| 713-287 | SOUTHWESTERN BELL | Yes |
| 713-288 | SPOK, INC. | No |
| 713-289 | SOUTHWESTERN BELL | Yes |
| 713-290 | SOUTHWESTERN BELL | No |
| 713-291 | AERIAL COMMUNICATIONS, INC. | No |
| 713-292 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-293 | SOUTHWESTERN BELL | Yes |
| 713-294 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-295 | SOUTHWESTERN BELL | Yes |
| 713-296 | SOUTHWESTERN BELL | Yes |
| 713-297 | SOUTHWESTERN BELL | Yes |
| 713-298 | AERIAL COMMUNICATIONS, INC. | No |
| 713-299 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-300 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-301 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-302 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-303 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-304 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-305 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-306 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-307 | SOUTHWESTERN BELL | Yes |
| 713-308 | SOUTHWESTERN BELL | No |
| 713-309 | SOUTHWESTERN BELL | Yes |
| 713-310 | SPOK, INC. | No |
| 713-312 | TELETOUCH COMMUNICATIONS, INC. | No |
| 713-313 | SOUTHWESTERN BELL | No |
| 713-314 | SOUTHWESTERN BELL | Yes |
| 713-315 | SOUTHWESTERN BELL | Yes |
| 713-316 | SOUTHWESTERN BELL | No |
| 713-317 | AMERICAN MESSAGING SERVICES, LLC | No |
| 713-318 | SPOK, INC. | No |
| 713-319 | SOUTHWESTERN BELL | Yes |
| 713-320 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-321 | SOUTHWESTERN BELL | Yes |
| 713-322 | BANDWIDTH.COM CLEC, LLC - TX | Yes |
| 713-324 | LEVEL 3 COMMUNICATIONS, LLC - TX | No |
| 713-325 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
| 713-326 | SPOK, INC. | No |
| 713-327 | SPOK, INC. | No |
| 713-328 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-329 | SOUTHWESTERN BELL | No |
| 713-330 | SOUTHWESTERN BELL | Yes |
| 713-331 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-332 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-333 | ONVOY, LLC - TX | No |
| 713-334 | SOUTHWESTERN BELL | No |
| 713-335 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-336 | SOUTHWESTERN BELL | Yes |
| 713-337 | ONVOY, LLC - TX | No |
| 713-338 | SOUTHWESTERN BELL | Yes |
| 713-339 | SOUTHWESTERN BELL | Yes |
| 713-341 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-342 | SOUTHWESTERN BELL | No |
| 713-343 | PAETEC ITEL, LLC | No |
| 713-344 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-345 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-346 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-347 | ONVOY, LLC - TX | Yes |
| 713-348 | SOUTHWESTERN BELL | Yes |
| 713-349 | SOUTHWESTERN BELL | Yes |
| 713-350 | SOUTHWESTERN BELL | No |
| 713-351 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-353 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | No |
| 713-354 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-355 | SOUTHWESTERN BELL | Yes |
| 713-356 | SOUTHWESTERN BELL | No |
| 713-357 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-358 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-359 | SOUTHWESTERN BELL | Yes |
| 713-360 | PAETEC ITEL, LLC | Yes |
| 713-361 | SOUTHWESTERN BELL | No |
| 713-362 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-363 | SOUTHWESTERN BELL | Yes |
| 713-364 | BANDWIDTH.COM CLEC, LLC - TX | Yes |
| 713-365 | SOUTHWESTERN BELL | No |
| 713-366 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | Yes |
| 713-367 | BANDWIDTH.COM CLEC, LLC - TX | Yes |
| 713-368 | SOUTHWESTERN BELL | No |
| 713-369 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | No |
| 713-370 | ONVOY, LLC - TX | Yes |
| 713-371 | SOUTHWESTERN BELL | Yes |
| 713-372 | SOUTHWESTERN BELL | Yes |
| 713-373 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | Yes |
| 713-374 | SOUTHWESTERN BELL | Yes |
| 713-375 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-376 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-378 | SOUTHWESTERN BELL | Yes |
| 713-380 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-381 | SOUTHWESTERN BELL | Yes |
| 713-382 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-383 | SOUTHWESTERN BELL | Yes |
| 713-384 | SOUTHWESTERN BELL | Yes |
| 713-385 | METROPCS, INC. | Yes |
| 713-386 | SOUTHWESTERN BELL | Yes |
| 713-387 | SOUTHWESTERN BELL | Yes |
| 713-388 | SOUTHWESTERN BELL | Yes |
| 713-390 | SOUTHWESTERN BELL | No |
| 713-391 | SOUTHWESTERN BELL | Yes |
| 713-392 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-393 | SOUTHWESTERN BELL | Yes |
| 713-394 | SOUTHWESTERN BELL | No |
| 713-395 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-396 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-397 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-398 | METROPCS, INC. | Yes |
| 713-399 | ONVOY SPECTRUM, LLC | Yes |
| 713-400 | ONVOY, LLC - TX | No |
| 713-401 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-402 | SOUTHWESTERN BELL | Yes |
| 713-403 | SOUTHWESTERN BELL | No |
| 713-404 | SPOK, INC. | No |
| 713-405 | SOUTHWESTERN BELL | Yes |
| 713-406 | SPOK, INC. | No |
| 713-407 | SOUTHWESTERN BELL | No |
| 713-408 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 713-409 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-410 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-412 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-413 | SOUTHWESTERN BELL | Yes |
| 713-414 | SOUTHWESTERN BELL | No |
| 713-415 | SPOK, INC. | No |
| 713-416 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-417 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-418 | SOUTHWESTERN BELL | Yes |
| 713-419 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-420 | SOUTHWESTERN BELL | Yes |
| 713-421 | TELETOUCH COMMUNICATIONS, INC. | No |
| 713-422 | SOUTHWESTERN BELL | Yes |
| 713-423 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-425 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-426 | SOUTHWESTERN BELL | No |
| 713-427 | SOUTHWESTERN BELL | Yes |
| 713-428 | SOUTHWESTERN BELL | Yes |
| 713-429 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-430 | SOUTHWESTERN BELL | Yes |
| 713-431 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
| 713-432 | SOUTHWESTERN BELL | Yes |
| 713-433 | SOUTHWESTERN BELL | No |
| 713-434 | SOUTHWESTERN BELL | Yes |
| 713-435 | SOUTHWESTERN BELL | Yes |
| 713-437 | SOUTHWESTERN BELL | Yes |
| 713-438 | SOUTHWESTERN BELL | Yes |
| 713-439 | SOUTHWESTERN BELL | No |
| 713-440 | SOUTHWESTERN BELL | Yes |
| 713-441 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-442 | SOUTHWESTERN BELL | No |
| 713-443 | METROPCS, INC. | Yes |
| 713-444 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-445 | SOUTHWESTERN BELL | Yes |
| 713-446 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-447 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-448 | SOUTHWESTERN BELL | Yes |
| 713-449 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-450 | SOUTHWESTERN BELL | No |
| 713-451 | SOUTHWESTERN BELL | No |
| 713-452 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-453 | SOUTHWESTERN BELL | Yes |
| 713-454 | SOUTHWESTERN BELL | Yes |
| 713-455 | SOUTHWESTERN BELL | No |
| 713-456 | SOUTHWESTERN BELL | Yes |
| 713-457 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-458 | SOUTHWESTERN BELL | Yes |
| 713-459 | AERIAL COMMUNICATIONS, INC. | No |
| 713-460 | SOUTHWESTERN BELL | No |
| 713-461 | SOUTHWESTERN BELL | No |
| 713-462 | SOUTHWESTERN BELL | Yes |
| 713-463 | SOUTHWESTERN BELL | No |
| 713-464 | SOUTHWESTERN BELL | No |
| 713-465 | SOUTHWESTERN BELL | No |
| 713-467 | SOUTHWESTERN BELL | No |
| 713-468 | SOUTHWESTERN BELL | No |
| 713-469 | SOUTHWESTERN BELL | Yes |
| 713-470 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-471 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-472 | SOUTHWESTERN BELL | Yes |
| 713-473 | SOUTHWESTERN BELL | No |
| 713-475 | SOUTHWESTERN BELL | No |
| 713-476 | SOUTHWESTERN BELL | Yes |
| 713-477 | SOUTHWESTERN BELL | No |
| 713-478 | AERIAL COMMUNICATIONS, INC. | No |
| 713-479 | SOUTHWESTERN BELL | No |
| 713-480 | AERIAL COMMUNICATIONS, INC. | No |
| 713-481 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-483 | SOUTHWESTERN BELL | Yes |
| 713-484 | SOUTHWESTERN BELL | Yes |
| 713-485 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Yes |
| 713-486 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-487 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | Yes |
| 713-488 | SOUTHWESTERN BELL | No |
| 713-489 | BANDWIDTH.COM CLEC, LLC - TX | Yes |
| 713-490 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | No |
| 713-491 | SOUTHWESTERN BELL | Yes |
| 713-492 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 713-493 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-494 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-495 | SOUTHWESTERN BELL | No |
| 713-496 | ONVOY, LLC - TX | Yes |
| 713-497 | SOUTHWESTERN BELL | Yes |
| 713-498 | AERIAL COMMUNICATIONS, INC. | No |
| 713-499 | SOUTHWESTERN BELL | Yes |
| 713-500 | SOUTHWESTERN BELL | No |
| 713-501 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-502 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-503 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-504 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-505 | AT&T ENTERPRISES, LLC | Yes |
| 713-506 | SPOK, INC. | No |
| 713-507 | SOUTHWESTERN BELL | No |
| 713-508 | SPOK, INC. | No |
| 713-509 | SPOK, INC. | No |
| 713-512 | SOUTHWESTERN BELL | Yes |
| 713-513 | SOUTHWESTERN BELL | Yes |
| 713-514 | SOUTHWESTERN BELL | Yes |
| 713-515 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-516 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-517 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-518 | WESTEL, INC. - TX | Yes |
| 713-520 | SOUTHWESTERN BELL | No |
| 713-521 | SOUTHWESTERN BELL | No |
| 713-522 | SOUTHWESTERN BELL | No |
| 713-523 | SOUTHWESTERN BELL | No |
| 713-524 | SOUTHWESTERN BELL | No |
| 713-525 | SOUTHWESTERN BELL | No |
| 713-526 | SOUTHWESTERN BELL | No |
| 713-527 | SOUTHWESTERN BELL | Yes |
| 713-528 | SOUTHWESTERN BELL | Yes |
| 713-529 | SOUTHWESTERN BELL | No |
| 713-530 | AERIAL COMMUNICATIONS, INC. | No |
| 713-532 | SOUTHWESTERN BELL | Yes |
| 713-533 | SOUTHWESTERN BELL | Yes |
| 713-534 | SOUTHWESTERN BELL | Yes |
| 713-535 | SOUTHWESTERN BELL | Yes |
| 713-536 | SOUTHWESTERN BELL | No |
| 713-537 | SOUTHWESTERN BELL | No |
| 713-539 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-540 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-541 | SOUTHWESTERN BELL | No |
| 713-542 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-543 | SOUTHWESTERN BELL | Yes |
| 713-544 | SOUTHWESTERN BELL | No |
| 713-545 | METROPCS, INC. | Yes |
| 713-546 | SOUTHWESTERN BELL | No |
| 713-547 | SOUTHWESTERN BELL | Yes |
| 713-548 | SOUTHWESTERN BELL | Yes |
| 713-549 | SPOK, INC. | No |
| 713-550 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | Yes |
| 713-551 | SOUTHWESTERN BELL | Yes |
| 713-552 | SOUTHWESTERN BELL | Yes |
| 713-553 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 713-554 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | No |
| 713-556 | SOUTHWESTERN BELL | Yes |
| 713-557 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-558 | SOUTHWESTERN BELL | No |
| 713-559 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | No |
| 713-560 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-561 | SOUTHWESTERN BELL | Yes |
| 713-562 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-563 | SOUTHWESTERN BELL | No |
| 713-566 | SOUTHWESTERN BELL | Yes |
| 713-567 | SOUTHWESTERN BELL | No |
| 713-568 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-569 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-571 | SOUTHWESTERN BELL | Yes |
| 713-572 | SOUTHWESTERN BELL | Yes |
| 713-574 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-576 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
| 713-577 | AT&T - LOCAL | Yes |
| 713-578 | SOUTHWESTERN BELL | Yes |
| 713-579 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-580 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | No |
| 713-581 | ONVOY, LLC - TX | Yes |
| 713-582 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-583 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-584 | SOUTHWESTERN BELL | Yes |
| 713-585 | SOUTHWESTERN BELL | Yes |
| 713-586 | SOUTHWESTERN BELL | Yes |
| 713-587 | SOUTHWESTERN BELL | Yes |
| 713-588 | SOUTHWESTERN BELL | Yes |
| 713-589 | SOUTHWESTERN BELL | Yes |
| 713-590 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | No |
| 713-591 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 713-592 | SOUTHWESTERN BELL | Yes |
| 713-593 | SPOK, INC. | No |
| 713-594 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-595 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | No |
| 713-596 | SOUTHWESTERN BELL | No |
| 713-597 | ONVOY, LLC - TX | Yes |
| 713-598 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-599 | SOUTHWESTERN BELL | No |
| 713-600 | ONVOY, LLC - TX | No |
| 713-601 | SPOK, INC. | No |
| 713-602 | SOUTHWESTERN BELL | No |
| 713-603 | SPOK, INC. | No |
| 713-604 | SPOK, INC. | No |
| 713-605 | SPOK, INC. | No |
| 713-606 | SPOK, INC. | No |
| 713-607 | SPOK, INC. | No |
| 713-608 | SPOK, INC. | No |
| 713-609 | SOUTHWESTERN BELL | Yes |
| 713-610 | SOUTHWESTERN BELL | No |
| 713-612 | TELETOUCH COMMUNICATIONS, INC. | No |
| 713-613 | SOUTHWESTERN BELL | Yes |
| 713-614 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-615 | SOUTHWESTERN BELL | No |
| 713-616 | SPOK, INC. | No |
| 713-617 | SPOK, INC. | No |
| 713-618 | SPOK, INC. | No |
| 713-619 | SPOK, INC. | No |
| 713-620 | SOUTHWESTERN BELL | Yes |
| 713-621 | SOUTHWESTERN BELL | No |
| 713-622 | SOUTHWESTERN BELL | No |
| 713-623 | SOUTHWESTERN BELL | Yes |
| 713-624 | SOUTHWESTERN BELL | Yes |
| 713-625 | SOUTHWESTERN BELL | No |
| 713-626 | SOUTHWESTERN BELL | No |
| 713-627 | SOUTHWESTERN BELL | No |
| 713-628 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-629 | SOUTHWESTERN BELL | No |
| 713-630 | SOUTHWESTERN BELL | Yes |
| 713-631 | SOUTHWESTERN BELL | Yes |
| 713-632 | SOUTHWESTERN BELL | Yes |
| 713-633 | SOUTHWESTERN BELL | No |
| 713-634 | SOUTHWESTERN BELL | Yes |
| 713-635 | SOUTHWESTERN BELL | Yes |
| 713-636 | SOUTHWESTERN BELL | Yes |
| 713-637 | SOUTHWESTERN BELL | Yes |
| 713-638 | SOUTHWESTERN BELL | No |
| 713-639 | SOUTHWESTERN BELL | No |
| 713-640 | SOUTHWESTERN BELL | Yes |
| 713-641 | SOUTHWESTERN BELL | No |
| 713-642 | SPOK, INC. | No |
| 713-643 | SOUTHWESTERN BELL | No |
| 713-644 | SOUTHWESTERN BELL | No |
| 713-645 | SOUTHWESTERN BELL | No |
| 713-646 | SOUTHWESTERN BELL | No |
| 713-647 | SOUTHWESTERN BELL | Yes |
| 713-648 | SPOK, INC. | No |
| 713-649 | SOUTHWESTERN BELL | No |
| 713-650 | SOUTHWESTERN BELL | No |
| 713-651 | SOUTHWESTERN BELL | No |
| 713-652 | SOUTHWESTERN BELL | Yes |
| 713-653 | SOUTHWESTERN BELL | Yes |
| 713-654 | SOUTHWESTERN BELL | No |
| 713-655 | SOUTHWESTERN BELL | No |
| 713-656 | SOUTHWESTERN BELL | No |
| 713-657 | SOUTHWESTERN BELL | Yes |
| 713-658 | SOUTHWESTERN BELL | Yes |
| 713-659 | SOUTHWESTERN BELL | Yes |
| 713-660 | SOUTHWESTERN BELL | Yes |
| 713-661 | SOUTHWESTERN BELL | No |
| 713-662 | SOUTHWESTERN BELL | No |
| 713-663 | SOUTHWESTERN BELL | No |
| 713-664 | SOUTHWESTERN BELL | No |
| 713-665 | SOUTHWESTERN BELL | Yes |
| 713-666 | SOUTHWESTERN BELL | No |
| 713-667 | SOUTHWESTERN BELL | No |
| 713-668 | SOUTHWESTERN BELL | No |
| 713-669 | SOUTHWESTERN BELL | No |
| 713-670 | SOUTHWESTERN BELL | Yes |
| 713-671 | SOUTHWESTERN BELL | No |
| 713-672 | SOUTHWESTERN BELL | No |
| 713-673 | SOUTHWESTERN BELL | Yes |
| 713-674 | SOUTHWESTERN BELL | No |
| 713-675 | SOUTHWESTERN BELL | No |
| 713-676 | SOUTHWESTERN BELL | No |
| 713-677 | SOUTHWESTERN BELL | Yes |
| 713-678 | SOUTHWESTERN BELL | Yes |
| 713-679 | SOUTHWESTERN BELL | Yes |
| 713-680 | SOUTHWESTERN BELL | No |
| 713-681 | SOUTHWESTERN BELL | No |
| 713-682 | SOUTHWESTERN BELL | Yes |
| 713-683 | SOUTHWESTERN BELL | No |
| 713-684 | SOUTHWESTERN BELL | Yes |
| 713-685 | SOUTHWESTERN BELL | No |
| 713-686 | SOUTHWESTERN BELL | No |
| 713-687 | SPOK, INC. | No |
| 713-688 | SOUTHWESTERN BELL | No |
| 713-689 | SOUTHWESTERN BELL | Yes |
| 713-690 | SOUTHWESTERN BELL | No |
| 713-691 | SOUTHWESTERN BELL | Yes |
| 713-692 | SOUTHWESTERN BELL | No |
| 713-693 | SOUTHWESTERN BELL | No |
| 713-694 | SOUTHWESTERN BELL | No |
| 713-695 | SOUTHWESTERN BELL | No |
| 713-696 | SOUTHWESTERN BELL | Yes |
| 713-697 | SOUTHWESTERN BELL | No |
| 713-698 | SPOK, INC. | No |
| 713-699 | SOUTHWESTERN BELL | No |
| 713-701 | SOUTHWESTERN BELL | Yes |
| 713-702 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-703 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-704 | SOUTHWESTERN BELL | No |
| 713-705 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-706 | SOUTHWESTERN BELL | No |
| 713-707 | SPOK, INC. | No |
| 713-708 | SPOK, INC. | No |
| 713-709 | SPOK, INC. | No |
| 713-710 | SPOK, INC. | No |
| 713-712 | SPOK, INC. | No |
| 713-713 | USFON, INC. - TX | Yes |
| 713-714 | COMCAST IP PHONE, LLC | Yes |
| 713-715 | SOUTHWESTERN BELL | Yes |
| 713-716 | SPOK, INC. | No |
| 713-717 | SPOK, INC. | No |
| 713-718 | SOUTHWESTERN BELL | No |
| 713-719 | SPOK, INC. | No |
| 713-720 | SPOK, INC. | No |
| 713-721 | SOUTHWESTERN BELL | No |
| 713-722 | SOUTHWESTERN BELL | No |
| 713-723 | SOUTHWESTERN BELL | No |
| 713-724 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-725 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-726 | SOUTHWESTERN BELL | Yes |
| 713-727 | AMERICAN MESSAGING SERVICES, LLC | No |
| 713-728 | SOUTHWESTERN BELL | Yes |
| 713-729 | SOUTHWESTERN BELL | No |
| 713-730 | SOUTHWESTERN BELL | Yes |
| 713-731 | SOUTHWESTERN BELL | Yes |
| 713-732 | SOUTHWESTERN BELL | Yes |
| 713-733 | SOUTHWESTERN BELL | No |
| 713-734 | SOUTHWESTERN BELL | No |
| 713-735 | SOUTHWESTERN BELL | No |
| 713-736 | SPOK, INC. | No |
| 713-737 | SOUTHWESTERN BELL | Yes |
| 713-738 | SOUTHWESTERN BELL | No |
| 713-739 | SOUTHWESTERN BELL | Yes |
| 713-740 | SOUTHWESTERN BELL | No |
| 713-741 | SOUTHWESTERN BELL | No |
| 713-742 | SOUTHWESTERN BELL | Yes |
| 713-743 | SOUTHWESTERN BELL | No |
| 713-744 | SOUTHWESTERN BELL | No |
| 713-745 | SOUTHWESTERN BELL | No |
| 713-746 | SOUTHWESTERN BELL | No |
| 713-747 | SOUTHWESTERN BELL | No |
| 713-748 | SOUTHWESTERN BELL | Yes |
| 713-749 | SOUTHWESTERN BELL | No |
| 713-750 | SOUTHWESTERN BELL | Yes |
| 713-751 | SOUTHWESTERN BELL | Yes |
| 713-752 | SOUTHWESTERN BELL | No |
| 713-753 | SOUTHWESTERN BELL | No |
| 713-754 | SOUTHWESTERN BELL | Yes |
| 713-755 | SOUTHWESTERN BELL | No |
| 713-756 | SOUTHWESTERN BELL | No |
| 713-757 | SOUTHWESTERN BELL | Yes |
| 713-758 | SOUTHWESTERN BELL | Yes |
| 713-759 | SOUTHWESTERN BELL | No |
| 713-760 | SPOK, INC. | No |
| 713-761 | SPOK, INC. | No |
| 713-762 | SPOK, INC. | No |
| 713-763 | SPOK, INC. | No |
| 713-764 | SPOK, INC. | No |
| 713-765 | SPOK, INC. | No |
| 713-766 | CENTURYLINK COMMUNICATIONS, LLC | Yes |
| 713-767 | SOUTHWESTERN BELL | No |
| 713-768 | SPOK, INC. | No |
| 713-770 | SOUTHWESTERN BELL | Yes |
| 713-771 | SOUTHWESTERN BELL | No |
| 713-772 | SOUTHWESTERN BELL | No |
| 713-773 | SOUTHWESTERN BELL | No |
| 713-774 | SOUTHWESTERN BELL | No |
| 713-775 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-776 | SOUTHWESTERN BELL | No |
| 713-777 | SOUTHWESTERN BELL | No |
| 713-778 | SOUTHWESTERN BELL | No |
| 713-779 | SOUTHWESTERN BELL | Yes |
| 713-780 | SOUTHWESTERN BELL | No |
| 713-781 | SOUTHWESTERN BELL | No |
| 713-782 | SOUTHWESTERN BELL | No |
| 713-783 | SOUTHWESTERN BELL | No |
| 713-784 | SOUTHWESTERN BELL | No |
| 713-785 | SOUTHWESTERN BELL | No |
| 713-786 | SPOK, INC. | No |
| 713-787 | SOUTHWESTERN BELL | No |
| 713-788 | SOUTHWESTERN BELL | Yes |
| 713-789 | SOUTHWESTERN BELL | No |
| 713-790 | SOUTHWESTERN BELL | No |
| 713-791 | SOUTHWESTERN BELL | Yes |
| 713-792 | SOUTHWESTERN BELL | No |
| 713-793 | SOUTHWESTERN BELL | Yes |
| 713-794 | SOUTHWESTERN BELL | Yes |
| 713-795 | SOUTHWESTERN BELL | No |
| 713-796 | SOUTHWESTERN BELL | No |
| 713-797 | SOUTHWESTERN BELL | Yes |
| 713-798 | SOUTHWESTERN BELL | No |
| 713-799 | SOUTHWESTERN BELL | Yes |
| 713-800 | ONVOY, LLC - TX | No |
| 713-801 | SPOK, INC. | No |
| 713-802 | SOUTHWESTERN BELL | No |
| 713-803 | SOUTHWESTERN BELL | Yes |
| 713-804 | ONVOY, LLC - TX | Yes |
| 713-805 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-806 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-807 | SOUTHWESTERN BELL | Yes |
| 713-808 | SOUTHWESTERN BELL | Yes |
| 713-809 | SPOK, INC. | No |
| 713-812 | SOUTHWESTERN BELL | No |
| 713-813 | SPOK, INC. | No |
| 713-814 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-815 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Yes |
| 713-816 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-817 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-818 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-819 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-820 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-821 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | No |
| 713-822 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-823 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-824 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-825 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-826 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-827 | SOUTHWESTERN BELL | No |
| 713-828 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-829 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-830 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | No |
| 713-831 | SOUTHWESTERN BELL | No |
| 713-832 | ONVOY, LLC - TX | Yes |
| 713-833 | SPOK, INC. | No |
| 713-834 | SOUTHWESTERN BELL | Yes |
| 713-835 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Yes |
| 713-836 | SOUTHWESTERN BELL | Yes |
| 713-837 | SOUTHWESTERN BELL | Yes |
| 713-838 | SOUTHWESTERN BELL | Yes |
| 713-839 | SOUTHWESTERN BELL | Yes |
| 713-840 | SOUTHWESTERN BELL | No |
| 713-841 | SPOK, INC. | No |
| 713-842 | SOUTHWESTERN BELL | Yes |
| 713-843 | SOUTHWESTERN BELL | Yes |
| 713-844 | SOUTHWESTERN BELL | Yes |
| 713-845 | SOUTHWESTERN BELL | No |
| 713-846 | SPOK, INC. | No |
| 713-847 | SOUTHWESTERN BELL | No |
| 713-848 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
| 713-850 | SOUTHWESTERN BELL | No |
| 713-851 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-852 | SOUTHWESTERN BELL | Yes |
| 713-853 | SOUTHWESTERN BELL | Yes |
| 713-854 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-855 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-857 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-858 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-859 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-860 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | No |
| 713-861 | SOUTHWESTERN BELL | No |
| 713-862 | SOUTHWESTERN BELL | No |
| 713-863 | SOUTHWESTERN BELL | Yes |
| 713-864 | SOUTHWESTERN BELL | No |
| 713-865 | SOUTHWESTERN BELL | Yes |
| 713-866 | SOUTHWESTERN BELL | No |
| 713-867 | SOUTHWESTERN BELL | No |
| 713-868 | SOUTHWESTERN BELL | No |
| 713-869 | SOUTHWESTERN BELL | No |
| 713-870 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-871 | SOUTHWESTERN BELL | No |
| 713-872 | RICE TELECOM CORPORATION | Yes |
| 713-873 | SOUTHWESTERN BELL | Yes |
| 713-874 | SOUTHWESTERN BELL | Yes |
| 713-875 | METROPCS, INC. | Yes |
| 713-876 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-877 | SOUTHWESTERN BELL | No |
| 713-878 | SOUTHWESTERN BELL | Yes |
| 713-880 | SOUTHWESTERN BELL | No |
| 713-881 | SOUTHWESTERN BELL | Yes |
| 713-882 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-883 | SPOK, INC. | No |
| 713-884 | SOUTHWESTERN BELL | Yes |
| 713-885 | SOUTHWESTERN BELL | Yes |
| 713-888 | SOUTHWESTERN BELL | No |
| 713-889 | SOUTHWESTERN BELL | No |
| 713-890 | SOUTHWESTERN BELL | Yes |
| 713-891 | SPOK, INC. | No |
| 713-892 | SOUTHWESTERN BELL | Yes |
| 713-894 | AERIAL COMMUNICATIONS, INC. | No |
| 713-895 | SOUTHWESTERN BELL | No |
| 713-898 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-899 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-900 | LEVEL 3 COMMUNICATIONS, LLC - TX | Yes |
| 713-901 | SPOK, INC. | No |
| 713-904 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
| 713-905 | SPOK, INC. | No |
| 713-906 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-907 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | No |
| 713-908 | AMERICAN MESSAGING SERVICES, LLC | No |
| 713-910 | SOUTHWESTERN BELL | No |
| 713-914 | SOUTHWESTERN BELL | No |
| 713-915 | SPOK, INC. | No |
| 713-916 | SPOK, INC. | No |
| 713-917 | SOUTHWESTERN BELL | No |
| 713-918 | SOUTHWESTERN BELL | Yes |
| 713-920 | SOUTHWESTERN BELL | Yes |
| 713-921 | SOUTHWESTERN BELL | No |
| 713-922 | AERIAL COMMUNICATIONS, INC. | No |
| 713-923 | SOUTHWESTERN BELL | Yes |
| 713-924 | SOUTHWESTERN BELL | Yes |
| 713-925 | ONVOY SPECTRUM, LLC | Yes |
| 713-926 | SOUTHWESTERN BELL | Yes |
| 713-927 | AERIAL COMMUNICATIONS, INC. | Yes |
| 713-928 | SOUTHWESTERN BELL | Yes |
| 713-929 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | Yes |
| 713-930 | ONVOY, LLC - TX | Yes |
| 713-931 | ONVOY, LLC - TX | Yes |
| 713-932 | SOUTHWESTERN BELL | No |
| 713-933 | ONVOY, LLC - TX | Yes |
| 713-934 | SOUTHWESTERN BELL | No |
| 713-935 | SOUTHWESTERN BELL | Yes |
| 713-936 | ONVOY, LLC - TX | Yes |
| 713-939 | SOUTHWESTERN BELL | No |
| 713-940 | SOUTHWESTERN BELL | Yes |
| 713-941 | SOUTHWESTERN BELL | Yes |
| 713-942 | SOUTHWESTERN BELL | No |
| 713-943 | SOUTHWESTERN BELL | No |
| 713-944 | SOUTHWESTERN BELL | No |
| 713-945 | SOUTHWESTERN BELL | No |
| 713-946 | SOUTHWESTERN BELL | No |
| 713-947 | SOUTHWESTERN BELL | No |
| 713-948 | SOUTHWESTERN BELL | No |
| 713-951 | SOUTHWESTERN BELL | No |
| 713-952 | SOUTHWESTERN BELL | No |
| 713-953 | SOUTHWESTERN BELL | No |
| 713-954 | SOUTHWESTERN BELL | No |
| 713-955 | PEERLESS NETWORK OF TEXAS, LLC - TX | Yes |
| 713-956 | SOUTHWESTERN BELL | No |
| 713-957 | SOUTHWESTERN BELL | Yes |
| 713-960 | SOUTHWESTERN BELL | Yes |
| 713-961 | SOUTHWESTERN BELL | No |
| 713-962 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 713-963 | SOUTHWESTERN BELL | No |
| 713-964 | SOUTHWESTERN BELL | No |
| 713-965 | SOUTHWESTERN BELL | Yes |
| 713-966 | SOUTHWESTERN BELL | Yes |
| 713-967 | SOUTHWESTERN BELL | No |
| 713-968 | SOUTHWESTERN BELL | No |
| 713-969 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 713-970 | SOUTHWESTERN BELL | Yes |
| 713-971 | SPOK, INC. | No |
| 713-972 | SOUTHWESTERN BELL | Yes |
| 713-973 | SOUTHWESTERN BELL | No |
| 713-974 | SOUTHWESTERN BELL | No |
| 713-975 | SOUTHWESTERN BELL | No |
| 713-977 | SOUTHWESTERN BELL | No |
| 713-978 | SOUTHWESTERN BELL | Yes |
| 713-979 | ONVOY, LLC - TX | Yes |
| 713-980 | ONVOY, LLC - TX | No |
| 713-981 | SOUTHWESTERN BELL | No |
| 713-982 | SOUTHWESTERN BELL | No |
| 713-984 | SOUTHWESTERN BELL | Yes |
| 713-985 | SOUTHWESTERN BELL | Yes |
| 713-986 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | No |
| 713-987 | SOUTHWESTERN BELL | Yes |
| 713-988 | SOUTHWESTERN BELL | No |
| 713-989 | SOUTHWESTERN BELL | No |
| 713-990 | SPOK, INC. | No |
| 713-991 | SOUTHWESTERN BELL | No |
| 713-993 | SOUTHWESTERN BELL | Yes |
| 713-994 | SOUTHWESTERN BELL | No |
| 713-995 | SOUTHWESTERN BELL | No |
| 713-996 | SOUTHWESTERN BELL | No |
| 713-997 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | Yes |
FAQ
What area code is Houston, TX?
Houston is served by 4 area codes — 281, 346, 713, 832 — which overlay the same territory.
How many prefixes does Houston have?
1,496 active NXX prefixes are anchored to this rate center in NANPA records, held by 53 carriers.
Is a call from a Houston prefix really from Houston?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.