DALLAS prefixes in area code 945
NANPA records 40 assigned NXX blocks to rate center DALLAS in area code 945, 13.3% of the 300 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. 26 holders hold those blocks, the largest being T-MOBILE USA, INC. (11), ONVOY, LLC - TX (3), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (2). The earliest assignment on record here is 2020-12-08 and the most recent 2026-09-16. 40 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 214, 469, 503, 570 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 945-218 | LEAP TELECOM, LLC | 2021-08-31 | yes | yes |
| 945-219 | Onvoy ONVOY, LLC - TX | 2021-09-14 | yes | yes |
| 945-221 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 945-229 | CALLWORKS CORPORATION | 2021-11-01 | yes | yes |
| 945-235 | Dish BOOST SUBSCRIBERCO L.L.C. | 2021-11-11 | yes | yes |
| 945-258 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2022-05-24 | yes | yes |
| 945-262 | TRUSTID, INC. | 2022-07-05 | yes | yes |
| 945-277 | HADLO TECHNOLOGIES, LLC | 2023-05-05 | yes | yes |
| 945-279 | Comcast COMCAST IP PHONE, LLC | 2022-11-02 | yes | yes |
| 945-282 | Windstream PAETEC ITEL, LLC | 2022-11-23 | yes | yes |
| 945-292 | FIVE9, INC. | 2023-03-16 | yes | yes |
| 945-293 | FIVE9, INC. | 2023-05-16 | yes | yes |
| 945-303 | EON TELECOM, INC. | 2023-08-29 | yes | yes |
| 945-313 | COMMIO, LLC | 2023-12-15 | yes | yes |
| 945-337 | Onvoy ONVOY, LLC - TX | 2024-03-26 | yes | yes |
| 945-350 | WIRETAP TELECOM, LLC. | 2024-09-18 | yes | yes |
| 945-351 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2024-09-05 | yes | yes |
| 945-391 | T-Mobile T-MOBILE USA, INC. | 2025-07-02 | yes | yes |
| 945-392 | T-Mobile T-MOBILE USA, INC. | 2025-07-14 | yes | yes |
| 945-393 | WAVENATION, LLC | 2025-07-17 | yes | yes |
| 945-394 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2025-08-05 | yes | yes |
| 945-396 | T-Mobile T-MOBILE USA, INC. | 2025-08-07 | yes | yes |
| 945-398 | T-Mobile T-MOBILE USA, INC. | 2025-08-20 | yes | yes |
| 945-399 | T-Mobile T-MOBILE USA, INC. | 2025-08-26 | yes | yes |
| 945-402 | T-Mobile T-MOBILE USA, INC. | 2025-09-10 | yes | yes |
| 945-403 | T-Mobile T-MOBILE USA, INC. | 2025-09-16 | yes | yes |
| 945-407 | T-Mobile T-MOBILE USA, INC. | 2025-09-29 | yes | yes |
| 945-408 | T-Mobile T-MOBILE USA, INC. | 2025-10-07 | yes | yes |
| 945-409 | T-Mobile T-MOBILE USA, INC. | 2025-10-15 | yes | yes |
| 945-410 | CSC WIRELESS, LLC | 2025-10-21 | yes | yes |
| 945-421 | T-Mobile T-MOBILE USA, INC. | 2025-12-12 | yes | yes |
| 945-468 | SKYE TELECOM LLC DBA SKYETEL | 2021-05-19 | yes | yes |
| 945-545 | BARR TELL USA, LLC | 2024-07-02 | yes | yes |
| 945-587 | AHOI LLC | 2025-11-20 | yes | yes |
| 945-880 | 8x8 8X8, INC. | 2026-09-16 | yes | no |
| 945-910 | Onvoy ONVOY, LLC - TX | 2020-12-08 | yes | yes |
| 945-941 | WIDE VOICE, LLC - TX | 2025-06-25 | yes | yes |
| 945-945 | USFON, INC. - TX | 2023-01-25 | yes | yes |
| 945-949 | HD CARRIER LLC | 2025-06-23 | yes | yes |
| 945-954 | VESTED NETWORKS, LLC | 2024-12-05 | 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 |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 11 | 27.5% |
| ONVOY, LLC - TX | Onvoy | 3 | 7.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 2 | 5% |
| FIVE9, INC. | – | 2 | 5% |
| LEAP TELECOM, LLC | – | 1 | 2.5% |
| CALLWORKS CORPORATION | – | 1 | 2.5% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 2.5% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 2.5% |
| TRUSTID, INC. | – | 1 | 2.5% |
| HADLO TECHNOLOGIES, LLC | – | 1 | 2.5% |
| COMCAST IP PHONE, LLC | Comcast | 1 | 2.5% |
| PAETEC ITEL, LLC | Windstream | 1 | 2.5% |
| EON TELECOM, INC. | – | 1 | 2.5% |
| COMMIO, LLC | – | 1 | 2.5% |
| WIRETAP TELECOM, LLC. | – | 1 | 2.5% |
| BANDWIDTH.COM CLEC, LLC - TX | Bandwidth | 1 | 2.5% |
| WAVENATION, LLC | – | 1 | 2.5% |
| CSC WIRELESS, LLC | – | 1 | 2.5% |
| SKYE TELECOM LLC DBA SKYETEL | – | 1 | 2.5% |
| BARR TELL USA, LLC | – | 1 | 2.5% |
| AHOI LLC | – | 1 | 2.5% |
| 8X8, INC. | 8x8 | 1 | 2.5% |
| WIDE VOICE, LLC - TX | – | 1 | 2.5% |
| USFON, INC. - TX | – | 1 | 2.5% |
| HD CARRIER LLC | – | 1 | 2.5% |
| VESTED NETWORKS, LLC | – | 1 | 2.5% |
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 DALLAS in area code 945?
40 blocks: 218, 219, 221, 229, 235, 258, 262, 277, 279, 282, 292, 293 and 28 more, all listed in the table above.
Which carriers have numbers in DALLAS?
T-MOBILE USA, INC. (11 blocks), ONVOY, LLC - TX (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (2 blocks), FIVE9, INC. (2 blocks), LEAP TELECOM, LLC (1 block), CALLWORKS CORPORATION (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is DALLAS 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.