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

SEALY prefixes in area code 979

NANPA records 10 assigned NXX blocks to rate center SEALY in area code 979, 2.4% of the 413 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 (3), LEVEL 3 COMMUNICATIONS, LLC - TX (2), BANDWIDTH.COM CLEC, LLC - TX (1). The earliest assignment on record here is 2001-08-29 and the most recent 2024-04-24. 10 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

10 assigned blocks – 2.4% of 979
7 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
979-231 Bandwidth BANDWIDTH.COM CLEC, LLC - TX 2017-11-27 yes yes
979-256 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX 2002-02-21 yes yes
979-351 T-Mobile AERIAL COMMUNICATIONS, INC. 2023-08-15 yes yes
979-407 IP HORIZON LLC 2024-04-24 yes yes
979-472 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
979-627 AT&T SOUTHWESTERN BELL – yes yes
979-746 TON80 COMMUNICATIONS, LLC 2022-01-11 yes yes
979-877 AT&T SOUTHWESTERN BELL – yes yes
979-885 AT&T SOUTHWESTERN BELL – yes yes
979-987 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX 2001-08-29 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 3 30%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 2 20%
BANDWIDTH.COM CLEC, LLC - TX Bandwidth 1 10%
AERIAL COMMUNICATIONS, INC. T-Mobile 1 10%
IP HORIZON LLC – 1 10%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 10%
TON80 COMMUNICATIONS, LLC – 1 10%

Frequently asked

Which prefixes belong to SEALY in area code 979?

10 blocks: 231, 256, 351, 407, 472, 627, 746, 877, 885, 987. The table above gives the holder of each.

Which carriers have numbers in SEALY?

SOUTHWESTERN BELL (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - TX (2 blocks), BANDWIDTH.COM CLEC, LLC - TX (1 block), AERIAL COMMUNICATIONS, INC. (1 block), IP HORIZON LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SEALY 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 979

All 413 prefixes in 979