NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

ALLEN prefixes in area code 972

NANPA records 14 assigned NXX blocks to rate center ALLEN in area code 972, 1.8% 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. 6 holders hold those blocks, the largest being SOUTHWESTERN BELL (5), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3), ONVOY, LLC - TX (2). The earliest assignment on record here is 2014-12-03 and the most recent 2022-04-28. 8 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, 402, 469, 517 – overlay codes cover the same geography, so a rate center is served by all of them.

14 assigned blocks – 1.8% of 972
6 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
972-332 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX – yes yes
972-359 AT&T SOUTHWESTERN BELL – yes yes
972-390 AT&T SOUTHWESTERN BELL – no yes
972-396 AT&T SOUTHWESTERN BELL – no yes
972-521 Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX – yes yes
972-634 Onvoy ONVOY, LLC - TX 2022-04-28 yes yes
972-649 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
972-678 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
972-727 AT&T SOUTHWESTERN BELL – no yes
972-737 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2014-12-03 yes yes
972-747 AT&T SOUTHWESTERN BELL – no yes
972-908 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
972-912 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
972-954 Onvoy ONVOY, LLC - TX – 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

HolderBrandBlocksShare here
SOUTHWESTERN BELL AT&T 5 35.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 21.4%
ONVOY, LLC - TX Onvoy 2 14.3%
GRANDE COMMUNICATIONS NETWORKS, INC. - TX – 2 14.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - TX AT&T 1 7.1%
LEVEL 3 OF TELECOM OF TEXAS, LLC - TX Lumen 1 7.1%

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 ALLEN in area code 972?

14 blocks: 332, 359, 390, 396, 521, 634, 649, 678, 727, 737, 747, 908 and 2 more, all listed in the table above.

Which carriers have numbers in ALLEN?

SOUTHWESTERN BELL (5 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), ONVOY, LLC - TX (2 blocks), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (1 block), 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 ALLEN 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.

Other rate centers in 972

All 785 prefixes in 972