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

BARKER prefixes in area code 281

NANPA records 20 assigned NXX blocks to rate center BARKER in area code 281, 2.5% of the 786 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. 7 holders hold those blocks, the largest being SOUTHWESTERN BELL (10), ONVOY, LLC - TX (3), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (2). The earliest assignment on record here is 2003-06-16 and the most recent 2023-09-28. 14 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 346, 713, 716, 832 – overlay codes cover the same geography, so a rate center is served by all of them.

20 assigned blocks – 2.5% of 281
7 holders of record
14 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
281-206 AT&T AT&T - LOCAL – yes yes
281-270 Onvoy ONVOY, LLC - TX 2023-09-28 yes yes
281-398 AT&T SOUTHWESTERN BELL – no yes
281-492 AT&T SOUTHWESTERN BELL – yes yes
281-578 AT&T SOUTHWESTERN BELL – no yes
281-579 AT&T SOUTHWESTERN BELL – no yes
281-599 AT&T SOUTHWESTERN BELL – no yes
281-600 Onvoy ONVOY, LLC - TX – yes yes
281-616 AT&T SOUTHWESTERN BELL – yes yes
281-646 AT&T SOUTHWESTERN BELL – no yes
281-647 AT&T SOUTHWESTERN BELL – no yes
281-675 AT&T SOUTHWESTERN BELL – yes yes
281-676 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX – yes yes
281-698 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX – yes yes
281-717 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX – yes yes
281-828 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – yes yes
281-829 AT&T SOUTHWESTERN BELL – yes yes
281-944 Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX – yes yes
281-945 Onvoy ONVOY, LLC - TX 2003-06-16 yes yes
281-994 Lumen LEVEL 3 OF TELECOM OF TEXAS, 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 10 50%
ONVOY, LLC - TX Onvoy 3 15%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX Verizon 2 10%
LEVEL 3 OF TELECOM OF TEXAS, LLC - TX Lumen 2 10%
AT&T - LOCAL AT&T 1 5%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 5%
GRANDE COMMUNICATIONS NETWORKS, INC. - TX – 1 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 BARKER in area code 281?

20 blocks: 206, 270, 398, 492, 578, 579, 599, 600, 616, 646, 647, 675 and 8 more, all listed in the table above.

Which carriers have numbers in BARKER?

SOUTHWESTERN BELL (10 blocks), ONVOY, LLC - TX (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (2 blocks), LEVEL 3 OF TELECOM OF TEXAS, LLC - TX (2 blocks), AT&T - LOCAL (1 block), LEVEL 3 COMMUNICATIONS, 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 BARKER 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 281

All 786 prefixes in 281