CARROLLTON prefixes in area code 972
NANPA records 28 assigned NXX blocks to rate center CARROLLTON in area code 972, 3.6% of the 785 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. 8 holders hold those blocks, the largest being FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (19), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2). The earliest assignment on record here is 2011-07-28 and the most recent 2011-07-28. 12 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 205, 214, 217, 234 – 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 |
|---|---|---|---|---|
| 972-236 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 972-242 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-245 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-300 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 972-306 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-307 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-323 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-360 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 972-389 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-394 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-395 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-416 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-417 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-418 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-428 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 972-440 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 972-446 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-466 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-478 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-492 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-512 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-662 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-695 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-798 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 972-810 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2011-07-28 | yes | yes |
| 972-820 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-862 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-939 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | 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 |
|---|---|---|---|
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | Frontier | 19 | 67.9% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 2 | 7.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 2 | 7.1% |
| GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | 1 | 3.6% |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Lumen | 1 | 3.6% |
| ONVOY, LLC - TX | Onvoy | 1 | 3.6% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 1 | 3.6% |
| SOUTHWESTERN BELL TELEPHONE COMPANY - TX | AT&T | 1 | 3.6% |
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 CARROLLTON in area code 972?
28 blocks: 236, 242, 245, 300, 306, 307, 323, 360, 389, 394, 395, 416 and 16 more, all listed in the table above.
Which carriers have numbers in CARROLLTON?
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (19 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (1 block), LEVEL 3 OF TELECOM OF TEXAS, LLC - TX (1 block), ONVOY, LLC - TX (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is CARROLLTON 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.