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

CAMPO prefixes in area code 619

NANPA records 6 assigned NXX blocks to rate center CAMPO in area code 619, 0.8% of the 785 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 LEVEL 3 COMMUNICATIONS, LLC - CA (1), PACIFIC BELL (1), IP HORIZON LLC (1). The earliest assignment on record here is 2015-08-24 and the most recent 2015-08-24. 5 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 719, 858 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 619
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
619-378 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
619-478 AT&T PACIFIC BELL – yes yes
619-503 IP HORIZON LLC – yes yes
619-658 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2015-08-24 yes yes
619-824 SKYE TELECOM LLC DBA SKYETEL – yes yes
619-868 NORTH COUNTY COMMUNICATION CORPORATION - CA – no 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
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 16.7%
PACIFIC BELL AT&T 1 16.7%
IP HORIZON LLC – 1 16.7%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 16.7%
SKYE TELECOM LLC DBA SKYETEL – 1 16.7%
NORTH COUNTY COMMUNICATION CORPORATION - CA – 1 16.7%

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 CAMPO in area code 619?

6 blocks: 378, 478, 503, 658, 824, 868. The table above gives the holder of each.

Which carriers have numbers in CAMPO?

LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), PACIFIC BELL (1 block), IP HORIZON LLC (1 block), BANDWIDTH.COM CLEC, LLC - CA (1 block), SKYE TELECOM LLC DBA SKYETEL (1 block), NORTH COUNTY COMMUNICATION CORPORATION - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CAMPO 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 619

All 785 prefixes in 619