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

MADISONVL prefixes in area code 936

NANPA records 7 assigned NXX blocks to rate center MADISONVL in area code 936, 1.7% of the 422 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 (2), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1). The earliest assignment on record here is 2004-03-08 and the most recent 2023-12-20. 7 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 270, 364, 423, 985 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 1.7% of 936
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
936-241 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX 2010-01-20 yes yes
936-245 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2007-03-01 yes yes
936-307 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX – yes yes
936-348 AT&T SOUTHWESTERN BELL – yes yes
936-349 AT&T SOUTHWESTERN BELL – yes yes
936-381 COMMIO, LLC 2023-12-20 yes yes
936-515 Peerless PEERLESS NETWORK OF TEXAS, LLC - TX 2004-03-08 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 2 28.6%
TELEPORT COMMUNICATIONS AMERICA, LLC - TX AT&T 1 14.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 1 14.3%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 14.3%
COMMIO, LLC – 1 14.3%
PEERLESS NETWORK OF TEXAS, LLC - TX Peerless 1 14.3%

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 MADISONVL in area code 936?

7 blocks: 241, 245, 307, 348, 349, 381, 515. The table above gives the holder of each.

Which carriers have numbers in MADISONVL?

SOUTHWESTERN BELL (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1 block), LEVEL 3 COMMUNICATIONS, LLC - TX (1 block), COMMIO, LLC (1 block), PEERLESS NETWORK 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 MADISONVL 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 936

All 422 prefixes in 936