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

FTSTOCKTON prefixes in area code 432

NANPA records 6 assigned NXX blocks to rate center FTSTOCKTON in area code 432, 1.8% of the 341 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1), AT&T ENTERPRISES, LLC (1), SOUTHWESTERN BELL (1). The earliest assignment on record here is 2002-05-06 and the most recent 2024-02-21. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 1.8% of 432
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
432-290 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2002-05-31 no yes
432-299 AT&T AT&T ENTERPRISES, LLC 2011-04-20 yes yes
432-336 AT&T SOUTHWESTERN BELL – yes yes
432-360 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX 2002-05-06 yes yes
432-423 Onvoy ONVOY, LLC - TX 2018-09-21 yes yes
432-434 Charter ONVOY SPECTRUM, LLC 2024-02-21 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 1 16.7%
AT&T ENTERPRISES, LLC AT&T 1 16.7%
SOUTHWESTERN BELL AT&T 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 1 16.7%
ONVOY, LLC - TX Onvoy 1 16.7%
ONVOY SPECTRUM, LLC Charter 1 16.7%

Frequently asked

Which prefixes belong to FTSTOCKTON in area code 432?

6 blocks: 290, 299, 336, 360, 423, 434. The table above gives the holder of each.

Which carriers have numbers in FTSTOCKTON?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (1 block), AT&T ENTERPRISES, LLC (1 block), SOUTHWESTERN BELL (1 block), LEVEL 3 COMMUNICATIONS, LLC - TX (1 block), ONVOY, LLC - TX (1 block), ONVOY SPECTRUM, 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 FTSTOCKTON 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 432

All 341 prefixes in 432