Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
PLANO prefixes in area code 972
NANPA records 92 assigned NXX blocks to rate center PLANO in area code 972, 11.7% 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. 11 holders hold those blocks, the largest being FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (63), SOUTHWESTERN BELL TELEPHONE COMPANY - TX (8), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7). The earliest assignment on record here is 2002-10-23 and the most recent 2021-11-04. 36 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, 331, 469, 630 – overlay codes cover the same geography, so a rate center is served by all of them.
92 assigned blocks – 11.7% of 972
11 holders of record
36 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 972-202 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 972-205 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-208 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-212 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | yes | yes |
| 972-240 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-244 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | – | yes | yes |
| 972-265 | Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | – | yes | yes |
| 972-271 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-272 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-276 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-278 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-295 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-303 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-309 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-312 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-372 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-378 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-379 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-384 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 972-398 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | no | yes |
| 972-403 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-412 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-414 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-422 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-423 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-424 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-429 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-431 | Lumen CENTURYLINK COMMUNICATIONS, LLC | – | yes | yes |
| 972-442 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-461 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-463 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-468 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-473 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-475 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-477 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 972-485 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-487 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-491 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-494 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-495 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-496 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-509 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-516 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-517 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-519 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-520 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2018-04-04 | yes | yes |
| 972-526 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 2002-10-23 | yes | yes |
| 972-527 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-530 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-531 | AT&T AT&T - LOCAL | – | yes | yes |
| 972-535 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-543 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 972-553 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 972-575 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-577 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | no | yes |
| 972-578 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-583 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-596 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-599 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-604 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-605 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-608 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-612 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-618 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-633 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-665 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-673 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-675 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-688 | HD CARRIER LLC | 2021-11-04 | yes | yes |
| 972-696 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-758 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-767 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-769 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-781 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-796 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-797 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-801 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | yes | yes |
| 972-805 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 972-806 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2017-03-02 | yes | yes |
| 972-826 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | no | yes |
| 972-836 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 972-840 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-864 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-867 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-881 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-905 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2011-03-24 | yes | yes |
| 972-926 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-941 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | yes | yes |
| 972-943 | AT&T SOUTHWESTERN BELL TELEPHONE COMPANY - TX | – | no | yes |
| 972-964 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-981 | Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | – | no | yes |
| 972-985 | 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 | 63 | 68.5% |
| SOUTHWESTERN BELL TELEPHONE COMPANY - TX | AT&T | 8 | 8.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 7 | 7.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 4 | 4.3% |
| GRANDE COMMUNICATIONS NETWORKS, INC. - TX | – | 4 | 4.3% |
| LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | Lumen | 1 | 1.1% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 1.1% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 1 | 1.1% |
| AT&T - LOCAL | AT&T | 1 | 1.1% |
| HD CARRIER LLC | – | 1 | 1.1% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | Lumen | 1 | 1.1% |
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 PLANO in area code 972?
92 blocks: 202, 205, 208, 212, 240, 244, 265, 271, 272, 276, 278, 295 and 80 more, all listed in the table above.
Which carriers have numbers in PLANO?
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (63 blocks), SOUTHWESTERN BELL TELEPHONE COMPANY - TX (8 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (4 blocks), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (4 blocks), LEVEL 3 OF TELECOM OF TEXAS, 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 PLANO 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.