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

ESCONDIDO prefixes in area code 760

NANPA records 57 assigned NXX blocks to rate center ESCONDIDO in area code 760, 7.3% 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. 15 holders hold those blocks, the largest being PACIFIC BELL (20), T-MOBILE USA, INC. (10), NEW CINGULAR WIRELESS PCS, LLC (5). The earliest assignment on record here is 2001-05-18 and the most recent 2007-10-24. 33 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 442 – overlay codes cover the same geography, so a rate center is served by all of them.

57 assigned blocks – 7.3% of 760
15 holders of record
33 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
760-215 T-Mobile METROPCS, INC. – yes yes
760-225 33 WIRELESS INC. – no yes
760-233 AT&T PACIFIC BELL – no yes
760-270 AT&T NEW CINGULAR WIRELESS PCS, LLC 2006-08-29 yes yes
760-291 AT&T PACIFIC BELL – yes yes
760-294 Comcast COMCAST PHONE OF CALIFORNIA, LLC – yes yes
760-300 IP HORIZON LLC – yes yes
760-317 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
760-432 AT&T PACIFIC BELL – yes yes
760-443 T-Mobile T-MOBILE USA, INC. – yes yes
760-445 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
760-466 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
760-480 AT&T PACIFIC BELL – no yes
760-484 AT&T AT&T - LOCAL – yes yes
760-489 AT&T PACIFIC BELL – no yes
760-497 T-Mobile T-MOBILE USA, INC. – yes yes
760-504 AT&T PACIFIC BELL – yes yes
760-520 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
760-522 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
760-532 T-Mobile T-MOBILE USA, INC. – yes yes
760-533 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
760-535 T-Mobile METROPCS, INC. – yes yes
760-546 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
760-580 T-Mobile T-MOBILE USA, INC. 2002-01-28 no yes
760-594 T-Mobile T-MOBILE USA, INC. – yes yes
760-644 T-Mobile T-MOBILE USA, INC. – yes yes
760-658 AT&T NEW CINGULAR WIRELESS PCS, LLC 2007-10-24 yes yes
760-670 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
760-690 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
760-703 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2001-09-21 no yes
760-705 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
760-708 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
760-715 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
760-735 AT&T PACIFIC BELL – no yes
760-737 AT&T PACIFIC BELL – no yes
760-738 AT&T PACIFIC BELL – no yes
760-739 AT&T PACIFIC BELL – no yes
760-740 AT&T PACIFIC BELL – no yes
760-741 AT&T PACIFIC BELL – no yes
760-743 AT&T PACIFIC BELL – no yes
760-745 AT&T PACIFIC BELL – no yes
760-746 AT&T PACIFIC BELL – no yes
760-747 AT&T PACIFIC BELL – no yes
760-755 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
760-781 AT&T PACIFIC BELL – yes yes
760-796 AT&T PACIFIC BELL – no yes
760-801 T-Mobile T-MOBILE USA, INC. – yes yes
760-802 T-Mobile T-MOBILE USA, INC. – yes yes
760-803 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
760-807 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
760-839 AT&T PACIFIC BELL – no yes
760-855 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-05-18 yes yes
760-871 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
760-877 T-Mobile T-MOBILE USA, INC. – yes yes
760-884 T-Mobile T-MOBILE USA, INC. – yes yes
760-888 Onvoy ONVOY, LLC - CA – yes yes
760-975 AT&T PACIFIC BELL – 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 20 35.1%
T-MOBILE USA, INC. T-Mobile 10 17.5%
NEW CINGULAR WIRELESS PCS, LLC AT&T 5 8.8%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 5 8.8%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 3 5.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 3 5.3%
METROPCS, INC. T-Mobile 2 3.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 2 3.5%
33 WIRELESS INC. – 1 1.8%
COMCAST PHONE OF CALIFORNIA, LLC Comcast 1 1.8%
IP HORIZON LLC – 1 1.8%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 1.8%
AT&T - LOCAL AT&T 1 1.8%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 1.8%
ONVOY, LLC - CA Onvoy 1 1.8%

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 ESCONDIDO in area code 760?

57 blocks: 215, 225, 233, 270, 291, 294, 300, 317, 432, 443, 445, 466 and 45 more, all listed in the table above.

Which carriers have numbers in ESCONDIDO?

PACIFIC BELL (20 blocks), T-MOBILE USA, INC. (10 blocks), NEW CINGULAR WIRELESS PCS, LLC (5 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (5 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ESCONDIDO 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