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

SAN BENITO prefixes in area code 956

NANPA records 12 assigned NXX blocks to rate center SAN BENITO in area code 956, 1.6% 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. 5 holders hold those blocks, the largest being STPCS JOINT VENTURE, LLC (6), SOUTHWESTERN BELL (3), TELNYX LLC (1). The earliest assignment on record here is 2001-06-25 and the most recent 2021-05-07. 10 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

12 assigned blocks – 1.6% of 956
5 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
956-234 STPCS JOINT VENTURE, LLC 2007-01-16 yes yes
956-241 STPCS JOINT VENTURE, LLC 2002-08-12 yes yes
956-247 STPCS JOINT VENTURE, LLC 2007-02-01 yes yes
956-276 AT&T SOUTHWESTERN BELL 2001-06-25 yes yes
956-361 AT&T SOUTHWESTERN BELL – no yes
956-399 AT&T SOUTHWESTERN BELL – no yes
956-456 STPCS JOINT VENTURE, LLC 2002-09-25 yes yes
956-626 STPCS JOINT VENTURE, LLC 2007-05-02 yes yes
956-695 Telnyx TELNYX LLC 2021-05-07 yes yes
956-788 AT&T AT&T - LOCAL 2002-05-14 yes yes
956-923 STPCS JOINT VENTURE, LLC 2007-07-13 yes yes
956-934 Onvoy ONVOY, LLC - TX – 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 – 6 50%
SOUTHWESTERN BELL AT&T 3 25%
TELNYX LLC Telnyx 1 8.3%
AT&T - LOCAL AT&T 1 8.3%
ONVOY, LLC - TX Onvoy 1 8.3%

Frequently asked

Which prefixes belong to SAN BENITO in area code 956?

12 blocks: 234, 241, 247, 276, 361, 399, 456, 626, 695, 788, 923, 934. The table above gives the holder of each.

Which carriers have numbers in SAN BENITO?

STPCS JOINT VENTURE, LLC (6 blocks), SOUTHWESTERN BELL (3 blocks), TELNYX LLC (1 block), AT&T - LOCAL (1 block), ONVOY, 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 SAN BENITO 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