Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
HOUSTON prefixes in area code 346
NANPA records 176 assigned NXX blocks to rate center HOUSTON in area code 346, 23.4% of the 752 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 43 holders hold those blocks, the largest being AERIAL COMMUNICATIONS, INC. (32), ONVOY, LLC - TX (19), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (18). The earliest assignment on record here is 2014-01-16 and the most recent 2026-09-16. 175 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 281, 417, 507, 662 – overlay codes cover the same geography, so a rate center is served by all of them.
176 assigned blocks – 23.4% of 346
43 holders of record
175 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 346-200 | Onvoy ONVOY, LLC - TX | 2015-03-17 | yes | yes |
| 346-201 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2014-11-26 | yes | yes |
| 346-204 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2015-08-18 | yes | yes |
| 346-212 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 346-214 | Onvoy ONVOY, LLC - TX | 2015-12-08 | yes | yes |
| 346-217 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-03-25 | yes | yes |
| 346-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-02-03 | yes | yes |
| 346-223 | Comcast COMCAST IP PHONE, LLC | 2016-02-04 | yes | yes |
| 346-226 | Comcast COMCAST IP PHONE, LLC | 2016-02-04 | yes | yes |
| 346-227 | Comcast COMCAST IP PHONE, LLC | 2016-02-04 | yes | yes |
| 346-228 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-03-25 | yes | yes |
| 346-231 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2015-06-22 | yes | yes |
| 346-232 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2016-01-29 | yes | yes |
| 346-234 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-03-25 | yes | yes |
| 346-237 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 346-238 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 2016-04-19 | yes | yes |
| 346-240 | Comcast COMCAST IP PHONE, LLC | 2015-06-22 | yes | yes |
| 346-241 | Onvoy ONVOY, LLC - TX | 2016-07-06 | yes | yes |
| 346-247 | Onvoy ONVOY, LLC - TX | 2014-02-03 | yes | yes |
| 346-250 | Vonage VONAGE AMERICA LLC | 2017-05-03 | yes | yes |
| 346-256 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-11-25 | yes | yes |
| 346-262 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2016-04-20 | yes | yes |
| 346-265 | AT&T SOUTHWESTERN BELL | 2017-07-18 | yes | yes |
| 346-266 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2017-07-19 | yes | yes |
| 346-267 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | – | yes | yes |
| 346-272 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2017-09-20 | yes | yes |
| 346-274 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2017-09-22 | yes | yes |
| 346-281 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-09-02 | yes | yes |
| 346-286 | AT&T SOUTHWESTERN BELL | 2017-04-11 | yes | yes |
| 346-293 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2018-01-16 | yes | yes |
| 346-294 | IP GLOBAL NETWORKS - TX | 2018-01-17 | yes | yes |
| 346-299 | Onvoy ONVOY, LLC - TX | 2017-08-16 | yes | yes |
| 346-303 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-08-20 | yes | yes |
| 346-308 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2015-09-28 | yes | yes |
| 346-310 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2016-01-12 | yes | yes |
| 346-317 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-11-24 | yes | yes |
| 346-319 | Comcast COMCAST IP PHONE, LLC | 2015-12-17 | yes | yes |
| 346-320 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-11-25 | yes | yes |
| 346-324 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2018-03-13 | yes | yes |
| 346-326 | Onvoy ONVOY, LLC - TX | 2018-02-06 | yes | yes |
| 346-327 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2018-03-22 | yes | yes |
| 346-330 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2016-11-18 | yes | yes |
| 346-335 | Comcast COMCAST IP PHONE, LLC | 2018-04-17 | yes | yes |
| 346-339 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2018-05-15 | yes | yes |
| 346-348 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2018-07-02 | yes | yes |
| 346-352 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2016-04-20 | yes | yes |
| 346-353 | AIRESPRING, INC. | 2018-07-24 | yes | yes |
| 346-354 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | – | yes | yes |
| 346-355 | VoIP Innovations VOIP INNOVATIONS, LLC | 2018-08-14 | yes | yes |
| 346-356 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2018-07-23 | yes | yes |
| 346-383 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 346-388 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2019-07-23 | yes | yes |
| 346-395 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2019-09-11 | yes | yes |
| 346-396 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2019-09-18 | yes | yes |
| 346-397 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2019-08-08 | yes | yes |
| 346-398 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2019-09-30 | yes | yes |
| 346-401 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-05-27 | yes | yes |
| 346-403 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | – | yes | yes |
| 346-404 | IP GLOBAL NETWORKS - TX | 2016-02-19 | yes | yes |
| 346-405 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 346-406 | Telnyx TELNYX LLC | 2016-12-02 | yes | yes |
| 346-407 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2019-10-28 | yes | yes |
| 346-426 | HD CARRIER LLC | 2019-10-31 | yes | yes |
| 346-428 | NUSO, LLC | 2020-07-28 | yes | yes |
| 346-430 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-09-02 | yes | yes |
| 346-438 | IP HORIZON LLC | 2020-09-28 | yes | yes |
| 346-441 | Comcast COMCAST IP PHONE, LLC | 2020-10-05 | yes | yes |
| 346-444 | FOREMOST TELECOMMUNICATIONS CORPORATION - TX | 2014-01-16 | yes | yes |
| 346-446 | WIDE VOICE, LLC - TX | 2018-08-15 | yes | yes |
| 346-448 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2020-10-26 | yes | yes |
| 346-451 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2020-11-17 | yes | yes |
| 346-453 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2021-01-11 | yes | yes |
| 346-455 | FRACTEL, LLC | 2020-11-17 | yes | yes |
| 346-469 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-09-02 | yes | yes |
| 346-473 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-06-10 | yes | yes |
| 346-475 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-06-10 | yes | yes |
| 346-492 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-08-12 | yes | yes |
| 346-494 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-08-12 | yes | yes |
| 346-500 | TERRA NOVA TELECOM INC. | 2019-03-19 | yes | yes |
| 346-502 | Onvoy ONVOY, LLC - TX | 2021-08-24 | yes | yes |
| 346-503 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-09-16 | yes | yes |
| 346-504 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-09-16 | yes | yes |
| 346-506 | Charter ONVOY SPECTRUM, LLC | 2021-09-16 | yes | yes |
| 346-509 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 346-510 | Charter ONVOY SPECTRUM, LLC | 2019-10-25 | yes | yes |
| 346-516 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2021-10-19 | yes | yes |
| 346-520 | CALLWORKS CORPORATION | 2021-11-01 | yes | yes |
| 346-526 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-11-18 | yes | yes |
| 346-537 | Dish BOOST SUBSCRIBERCO L.L.C. | 2021-12-29 | yes | yes |
| 346-541 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-01-14 | yes | yes |
| 346-542 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2022-01-05 | yes | yes |
| 346-547 | Onvoy ONVOY, LLC - TX | 2022-01-27 | yes | yes |
| 346-553 | Onvoy ONVOY, LLC - TX | 2022-04-05 | yes | yes |
| 346-554 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2022-04-12 | yes | yes |
| 346-556 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2022-05-24 | yes | yes |
| 346-560 | Windstream PAETEC ITEL, LLC | 2022-06-22 | yes | yes |
| 346-561 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2016-09-09 | yes | yes |
| 346-562 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-06-28 | yes | yes |
| 346-563 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-06-28 | yes | yes |
| 346-564 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-06-29 | yes | yes |
| 346-565 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-06-29 | yes | yes |
| 346-571 | Comcast COMCAST IP PHONE, LLC | 2015-09-15 | yes | yes |
| 346-577 | FRACTEL, LLC | 2020-07-09 | yes | yes |
| 346-586 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2022-09-02 | yes | yes |
| 346-599 | FRACTEL, LLC | 2021-05-10 | yes | yes |
| 346-601 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2022-10-20 | yes | yes |
| 346-607 | T-Mobile METROPCS, INC. | 2022-11-22 | yes | yes |
| 346-610 | Onvoy ONVOY, LLC - TX | 2018-09-13 | yes | yes |
| 346-613 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2022-12-20 | yes | yes |
| 346-618 | Comcast COMCAST IP PHONE, LLC | 2023-02-23 | yes | yes |
| 346-619 | NUSO, LLC | 2023-02-16 | yes | yes |
| 346-621 | VESTED NETWORKS, LLC | 2025-07-30 | yes | yes |
| 346-628 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2023-01-12 | yes | yes |
| 346-638 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2023-01-12 | yes | yes |
| 346-646 | Onvoy ONVOY, LLC - TX | 2020-11-13 | yes | yes |
| 346-648 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2023-01-12 | yes | yes |
| 346-649 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2023-01-12 | yes | yes |
| 346-651 | HADLO TECHNOLOGIES, LLC | 2023-05-05 | yes | yes |
| 346-665 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2023-04-06 | yes | yes |
| 346-674 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2023-06-12 | yes | yes |
| 346-692 | EON TELECOM, INC. | 2023-08-29 | yes | yes |
| 346-701 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 346-704 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2015-04-15 | yes | yes |
| 346-718 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2016-04-14 | yes | yes |
| 346-719 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2016-11-03 | yes | yes |
| 346-720 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-721 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-722 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-723 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-725 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-726 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-727 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-728 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-729 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-739 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2023-11-06 | yes | yes |
| 346-741 | EON TELECOM, INC. | 2023-11-27 | yes | yes |
| 346-766 | FRACTEL, LLC | 2019-05-21 | yes | yes |
| 346-771 | Onvoy ONVOY, LLC - TX | 2024-01-25 | yes | yes |
| 346-772 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2015-08-26 | yes | yes |
| 346-775 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-11-24 | yes | yes |
| 346-781 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2024-02-16 | yes | yes |
| 346-800 | Onvoy ONVOY, LLC - TX | 2015-03-26 | yes | yes |
| 346-802 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2015-06-18 | yes | yes |
| 346-809 | Onvoy ONVOY, LLC - TX | 2024-04-29 | yes | yes |
| 346-817 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2026-07-16 | yes | yes |
| 346-826 | Onvoy ONVOY, LLC - TX | 2024-06-06 | yes | yes |
| 346-830 | SHELCOMM | 2024-09-26 | no | yes |
| 346-832 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2024-07-16 | yes | yes |
| 346-833 | FRACTEL, LLC | 2022-02-01 | yes | yes |
| 346-834 | AT&T SOUTHWESTERN BELL | 2014-02-27 | yes | yes |
| 346-835 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2024-07-16 | yes | yes |
| 346-845 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2024-10-17 | yes | yes |
| 346-860 | Dish BOOST SUBSCRIBERCO L.L.C. | 2025-02-18 | yes | yes |
| 346-862 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2025-03-05 | yes | yes |
| 346-863 | WIRETAP TELECOM, LLC. | 2025-03-28 | yes | yes |
| 346-867 | COMMIO, LLC | 2016-11-02 | yes | yes |
| 346-868 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2025-04-21 | yes | yes |
| 346-875 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2025-06-02 | yes | yes |
| 346-879 | WAVENATION, LLC | 2025-07-18 | yes | yes |
| 346-887 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2025-09-04 | yes | yes |
| 346-893 | AHOI LLC | 2025-09-30 | yes | yes |
| 346-895 | Twilio TWILIO INTERNATIONAL, INC. | 2020-08-05 | yes | yes |
| 346-898 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2025-11-12 | yes | yes |
| 346-906 | Dish BOOST SUBSCRIBERCO L.L.C. | 2025-12-04 | yes | yes |
| 346-920 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-02-17 | yes | yes |
| 346-923 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-03-27 | yes | yes |
| 346-924 | Dish BOOST SUBSCRIBERCO L.L.C. | 2026-04-02 | yes | yes |
| 346-925 | Onvoy ONVOY, LLC - TX | 2026-04-09 | yes | yes |
| 346-929 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-06-09 | yes | yes |
| 346-930 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2026-06-10 | yes | no |
| 346-932 | Onvoy ONVOY, LLC - TX | 2014-05-08 | yes | yes |
| 346-971 | AT&T SOUTHWESTERN BELL | 2015-09-14 | yes | yes |
| 346-980 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | – | yes | yes |
| 346-981 | 8x8 8X8, INC. | 2026-09-16 | yes | no |
| 346-992 | TELIMIZE, LLC | 2026-08-05 | yes | yes |
| 346-998 | Peerless PEERLESS NETWORK OF TEXAS, LLC - TX | 2016-10-19 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 32 | 18.2% |
| ONVOY, LLC - TX | Onvoy | 19 | 10.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Verizon | 18 | 10.2% |
| SOUTHWESTERN BELL | AT&T | 13 | 7.4% |
| BANDWIDTH.COM CLEC, LLC - TX | Bandwidth | 10 | 5.7% |
| COMCAST IP PHONE, LLC | Comcast | 9 | 5.1% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 8 | 4.5% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 8 | 4.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 7 | 4% |
| PEERLESS NETWORK OF TEXAS, LLC - TX | Peerless | 6 | 3.4% |
| FRACTEL, LLC | – | 5 | 2.8% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 4 | 2.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Verizon | 3 | 1.7% |
| IP GLOBAL NETWORKS - TX | – | 2 | 1.1% |
| NUSO, LLC | – | 2 | 1.1% |
| ONVOY SPECTRUM, LLC | Charter | 2 | 1.1% |
| EON TELECOM, INC. | – | 2 | 1.1% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 0.6% |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Lumen | 1 | 0.6% |
| VONAGE AMERICA LLC | Vonage | 1 | 0.6% |
| AIRESPRING, INC. | – | 1 | 0.6% |
| VOIP INNOVATIONS, LLC | VoIP Innovations | 1 | 0.6% |
| TELNYX LLC | Telnyx | 1 | 0.6% |
| HD CARRIER LLC | – | 1 | 0.6% |
| IP HORIZON LLC | – | 1 | 0.6% |
| FOREMOST TELECOMMUNICATIONS CORPORATION - TX | – | 1 | 0.6% |
| WIDE VOICE, LLC - TX | – | 1 | 0.6% |
| TERRA NOVA TELECOM INC. | – | 1 | 0.6% |
| CALLWORKS CORPORATION | – | 1 | 0.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 0.6% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 0.6% |
| PAETEC ITEL, LLC | Windstream | 1 | 0.6% |
| METROPCS, INC. | T-Mobile | 1 | 0.6% |
| VESTED NETWORKS, LLC | – | 1 | 0.6% |
| HADLO TECHNOLOGIES, LLC | – | 1 | 0.6% |
| SHELCOMM | – | 1 | 0.6% |
| WIRETAP TELECOM, LLC. | – | 1 | 0.6% |
| COMMIO, LLC | – | 1 | 0.6% |
| WAVENATION, LLC | – | 1 | 0.6% |
| AHOI LLC | – | 1 | 0.6% |
| TWILIO INTERNATIONAL, INC. | Twilio | 1 | 0.6% |
| 8X8, INC. | 8x8 | 1 | 0.6% |
| TELIMIZE, LLC | – | 1 | 0.6% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to HOUSTON in area code 346?
176 blocks: 200, 201, 204, 212, 214, 217, 221, 223, 226, 227, 228, 231 and 164 more, all listed in the table above.
Which carriers have numbers in HOUSTON?
AERIAL COMMUNICATIONS, INC. (32 blocks), ONVOY, LLC - TX (19 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (18 blocks), SOUTHWESTERN BELL (13 blocks), BANDWIDTH.COM CLEC, LLC - TX (10 blocks), COMCAST IP PHONE, LLC (9 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HOUSTON a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.