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

MUNDAY prefixes in area code 940

NANPA records 5 assigned NXX blocks to rate center MUNDAY in area code 940, 1.0% 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. 4 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), LEVEL 3 COMMUNICATIONS, LLC - TX (1). The earliest assignment on record here is 2002-11-25 and the most recent 2016-08-15. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
940-203 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2002-11-25 yes yes
940-313 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 2016-08-15 yes yes
940-355 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX 2006-09-20 yes yes
940-421 SANTA ROSA TELEPHONE COOPERATIVE, INC. 2005-02-28 no yes
940-422 Windstream VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW – 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 40%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 1 20%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 20%
SANTA ROSA TELEPHONE COOPERATIVE, INC. – 1 20%

Frequently asked

Which prefixes belong to MUNDAY in area code 940?

5 blocks: 203, 313, 355, 421, 422. The table above gives the holder of each.

Which carriers have numbers in MUNDAY?

VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1 block), LEVEL 3 COMMUNICATIONS, LLC - 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 MUNDAY 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