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

CALEXICO prefixes in area code 442

NANPA records 7 assigned NXX blocks to rate center CALEXICO in area code 442, 2.0% of the 356 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 ONVOY, LLC - CA (2), NEW CINGULAR WIRELESS PCS, LLC (2), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1). The earliest assignment on record here is 2017-06-15 and the most recent 2024-04-29. 7 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 code 760 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 2% of 442
5 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
442-200 Onvoy ONVOY, LLC - CA – yes yes
442-250 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2017-06-15 yes yes
442-252 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
442-367 AT&T NEW CINGULAR WIRELESS PCS, LLC 2021-10-19 yes yes
442-409 AT&T NEW CINGULAR WIRELESS PCS, LLC 2023-06-16 yes yes
442-432 FRACTEL, LLC 2020-09-17 yes yes
442-460 Onvoy ONVOY, LLC - CA 2024-04-29 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
ONVOY, LLC - CA Onvoy 2 28.6%
NEW CINGULAR WIRELESS PCS, LLC AT&T 2 28.6%
PEERLESS NETWORK OF CALIFORNIA, LLC - CA Peerless 1 14.3%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 14.3%
FRACTEL, LLC – 1 14.3%

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 CALEXICO in area code 442?

7 blocks: 200, 250, 252, 367, 409, 432, 460. The table above gives the holder of each.

Which carriers have numbers in CALEXICO?

ONVOY, LLC - CA (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (2 blocks), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), FRACTEL, 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 CALEXICO 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 442

All 356 prefixes in 442