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

SEYMOUR prefixes in area code 940

NANPA records 6 assigned NXX blocks to rate center SEYMOUR in area code 940, 1.2% of the 506 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. 5 holders hold those blocks, the largest being VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1), T-MOBILE USA, INC. (1). The earliest assignment on record here is 2016-07-25 and the most recent 2019-05-31. 4 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 203, 217, 417, 447 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 1.2% of 940
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
940-256 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX – yes yes
940-317 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 2016-07-25 yes yes
940-347 T-Mobile T-MOBILE USA, INC. – yes yes
940-545 AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 2019-05-31 yes yes
940-888 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW – no yes
940-889 SANTA ROSA TELEPHONE COOPERATIVE, INC. – 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

HolderBrandBlocksShare here
VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW Windstream 2 33.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 1 16.7%
T-MOBILE USA, INC. T-Mobile 1 16.7%
AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX – 1 16.7%
SANTA ROSA TELEPHONE COOPERATIVE, INC. – 1 16.7%

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 SEYMOUR in area code 940?

6 blocks: 256, 317, 347, 545, 888, 889. The table above gives the holder of each.

Which carriers have numbers in SEYMOUR?

VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1 block), T-MOBILE USA, INC. (1 block), AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX (1 block), SANTA ROSA TELEPHONE COOPERATIVE, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SEYMOUR 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 940

All 506 prefixes in 940