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

ZAPATA prefixes in area code 956

NANPA records 10 assigned NXX blocks to rate center ZAPATA in area code 956, 1.4% 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 STPCS JOINT VENTURE, LLC (4), ONVOY, LLC - TX (2), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (1). The earliest assignment on record here is 2003-04-21 and the most recent 2022-04-04. 8 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

10 assigned blocks – 1.4% of 956
6 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
956-253 Onvoy ONVOY, LLC - TX – no yes
956-265 STPCS JOINT VENTURE, LLC 2003-04-21 yes yes
956-302 Onvoy ONVOY, LLC - TX – no yes
956-614 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX 2015-05-21 yes yes
956-644 FRACTEL, LLC 2021-01-14 yes yes
956-656 STPCS JOINT VENTURE, LLC 2020-09-04 yes yes
956-737 TON80 COMMUNICATIONS, LLC 2022-04-04 yes yes
956-750 STPCS JOINT VENTURE, LLC – yes yes
956-751 STPCS JOINT VENTURE, LLC 2022-03-03 yes yes
956-765 AT&T SOUTHWESTERN BELL – 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
STPCS JOINT VENTURE, LLC – 4 40%
ONVOY, LLC - TX Onvoy 2 20%
TELEPORT COMMUNICATIONS AMERICA, LLC - TX AT&T 1 10%
FRACTEL, LLC – 1 10%
TON80 COMMUNICATIONS, LLC – 1 10%
SOUTHWESTERN BELL AT&T 1 10%

Frequently asked

Which prefixes belong to ZAPATA in area code 956?

10 blocks: 253, 265, 302, 614, 644, 656, 737, 750, 751, 765. The table above gives the holder of each.

Which carriers have numbers in ZAPATA?

STPCS JOINT VENTURE, LLC (4 blocks), ONVOY, LLC - TX (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (1 block), FRACTEL, LLC (1 block), TON80 COMMUNICATIONS, LLC (1 block), SOUTHWESTERN BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ZAPATA 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