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

EDINBURG prefixes in area code 956

NANPA records 53 assigned NXX blocks to rate center EDINBURG in area code 956, 7.2% 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. 14 holders hold those blocks, the largest being SOUTHWESTERN BELL (16), NEW CINGULAR WIRELESS PCS, LLC - IL (12), STPCS JOINT VENTURE, LLC (6). The earliest assignment on record here is 2001-04-12 and the most recent 2026-04-28. 37 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 217, 540, 701, 826 – overlay codes cover the same geography, so a rate center is served by all of them.

53 assigned blocks – 7.2% of 956
14 holders of record
37 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
956-207 STPCS JOINT VENTURE, LLC 2003-01-21 yes yes
956-219 STPCS JOINT VENTURE, LLC 2007-02-28 yes yes
956-239 STPCS JOINT VENTURE, LLC 2001-04-12 yes yes
956-250 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2011-07-28 yes yes
956-252 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2012-09-26 yes yes
956-259 SMARTCOM TELEPHONE, LLC 2003-06-02 no yes
956-270 STPCS JOINT VENTURE, LLC 2010-12-29 yes yes
956-279 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-287 AT&T SOUTHWESTERN BELL – yes yes
956-288 Spok SPOK, INC. 2001-05-07 no yes
956-289 AT&T SOUTHWESTERN BELL – yes yes
956-292 AT&T SOUTHWESTERN BELL – yes yes
956-305 Onvoy ONVOY, LLC - TX – no yes
956-316 AT&T SOUTHWESTERN BELL – no yes
956-318 AT&T SOUTHWESTERN BELL – no yes
956-329 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX 2010-12-29 yes yes
956-330 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-339 Bandwidth BANDWIDTH.COM CLEC, LLC - TX 2022-07-28 yes yes
956-348 FOREMOST TELECOMMUNICATIONS CORPORATION - TX 2016-11-14 yes yes
956-369 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-378 Charter TWC IP ENABLED SERVICES, LLC 2013-05-28 yes yes
956-380 AT&T SOUTHWESTERN BELL – no yes
956-381 AT&T SOUTHWESTERN BELL – yes yes
956-383 AT&T SOUTHWESTERN BELL – no yes
956-384 AT&T SOUTHWESTERN BELL – no yes
956-385 AT&T SOUTHWESTERN BELL – no yes
956-386 AT&T SOUTHWESTERN BELL – yes yes
956-387 AT&T SOUTHWESTERN BELL – no yes
956-388 AT&T SOUTHWESTERN BELL – yes yes
956-393 AT&T SOUTHWESTERN BELL – yes yes
956-409 Dish BOOST SUBSCRIBERCO L.L.C. 2026-04-28 yes yes
956-450 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2018-12-28 yes yes
956-457 STPCS JOINT VENTURE, LLC 2002-09-25 yes yes
956-478 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2014-09-22 yes yes
956-513 Bandwidth BANDWIDTH.COM CLEC, LLC - TX 2014-09-24 yes yes
956-587 AT&T SOUTHWESTERN BELL 2007-03-12 yes yes
956-603 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2014-11-25 yes yes
956-605 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-607 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-609 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2015-01-26 yes yes
956-663 Onvoy ONVOY, LLC - TX 2021-11-02 yes yes
956-665 AT&T SOUTHWESTERN BELL 2010-04-05 yes yes
956-670 Dish BOOST SUBSCRIBERCO L.L.C. 2022-02-01 yes yes
956-703 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2013-10-18 yes yes
956-720 STPCS JOINT VENTURE, LLC 2006-05-24 yes yes
956-802 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
956-874 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
956-900 FOREMOST TELECOMMUNICATIONS CORPORATION - TX 2013-10-31 yes yes
956-917 Onvoy ONVOY, LLC - TX 2024-02-01 yes yes
956-929 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2001-05-11 yes yes
956-935 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2024-11-19 yes yes
956-957 Onvoy ONVOY, LLC - TX 2020-10-19 yes yes
956-991 IP HORIZON LLC 2025-04-07 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 16 30.2%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 12 22.6%
STPCS JOINT VENTURE, LLC – 6 11.3%
ONVOY, LLC - TX Onvoy 4 7.5%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 3 5.7%
BANDWIDTH.COM CLEC, LLC - TX Bandwidth 2 3.8%
FOREMOST TELECOMMUNICATIONS CORPORATION - TX – 2 3.8%
BOOST SUBSCRIBERCO L.L.C. Dish 2 3.8%
SMARTCOM TELEPHONE, LLC – 1 1.9%
SPOK, INC. Spok 1 1.9%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 1.9%
TWC IP ENABLED SERVICES, LLC Charter 1 1.9%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 1.9%
IP HORIZON LLC – 1 1.9%

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 EDINBURG in area code 956?

53 blocks: 207, 219, 239, 250, 252, 259, 270, 279, 287, 288, 289, 292 and 41 more, all listed in the table above.

Which carriers have numbers in EDINBURG?

SOUTHWESTERN BELL (16 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (12 blocks), STPCS JOINT VENTURE, LLC (6 blocks), ONVOY, LLC - TX (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (3 blocks), BANDWIDTH.COM CLEC, LLC - TX (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is EDINBURG 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