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

EDCOUCH prefixes in area code 956

NANPA records 6 assigned NXX blocks to rate center EDCOUCH in area code 956, 0.8% of the 735 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 LEVEL 3 COMMUNICATIONS, LLC - TX (1), SOUTHWESTERN BELL (1), ONVOY, LLC - TX (1). The earliest assignment on record here is 2005-05-24 and the most recent 2022-04-04. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.8% of 956
6 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
956-255 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX – yes yes
956-262 AT&T SOUTHWESTERN BELL – no yes
956-306 Onvoy ONVOY, LLC - TX – no yes
956-527 Bandwidth BANDWIDTH.COM CLEC, LLC - TX 2019-04-30 yes yes
956-567 SMARTCOM TELEPHONE, LLC 2005-05-24 yes yes
956-864 TON80 COMMUNICATIONS, LLC 2022-04-04 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
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 16.7%
SOUTHWESTERN BELL AT&T 1 16.7%
ONVOY, LLC - TX Onvoy 1 16.7%
BANDWIDTH.COM CLEC, LLC - TX Bandwidth 1 16.7%
SMARTCOM TELEPHONE, LLC – 1 16.7%
TON80 COMMUNICATIONS, LLC – 1 16.7%

Frequently asked

Which prefixes belong to EDCOUCH in area code 956?

6 blocks: 255, 262, 306, 527, 567, 864. The table above gives the holder of each.

Which carriers have numbers in EDCOUCH?

LEVEL 3 COMMUNICATIONS, LLC - TX (1 block), SOUTHWESTERN BELL (1 block), ONVOY, LLC - TX (1 block), BANDWIDTH.COM CLEC, LLC - TX (1 block), SMARTCOM TELEPHONE, LLC (1 block), TON80 COMMUNICATIONS, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is EDCOUCH 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 956

All 735 prefixes in 956