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

IMPERIAL prefixes in area code 760

NANPA records 5 assigned NXX blocks to rate center IMPERIAL in area code 760, 0.6% 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. 5 holders hold those blocks, the largest being PACIFIC BELL (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (1), ONVOY, LLC - CA (1). The earliest assignment on record here is 2012-01-12 and the most recent 2012-01-12. 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 308, 432, 442, 636 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 760
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
760-355 AT&T PACIFIC BELL – yes yes
760-457 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
760-483 Onvoy ONVOY, LLC - CA – yes yes
760-545 AT&T AT&T - LOCAL – yes yes
760-919 Windstream PAETEC ITEL, LLC 2012-01-12 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
PACIFIC BELL AT&T 1 20%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 1 20%
ONVOY, LLC - CA Onvoy 1 20%
AT&T - LOCAL AT&T 1 20%
PAETEC ITEL, LLC Windstream 1 20%

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 IMPERIAL in area code 760?

5 blocks: 355, 457, 483, 545, 919. The table above gives the holder of each.

Which carriers have numbers in IMPERIAL?

PACIFIC BELL (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (1 block), ONVOY, LLC - CA (1 block), AT&T - LOCAL (1 block), PAETEC ITEL, 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 IMPERIAL 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 760

All 785 prefixes in 760