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

CORONADO prefixes in area code 619

NANPA records 22 assigned NXX blocks to rate center CORONADO in area code 619, 2.8% 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. 8 holders hold those blocks, the largest being T-MOBILE USA, INC. (8), PACIFIC BELL (5), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (2). The earliest assignment on record here is 2001-02-22 and the most recent 2016-10-10. 19 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 858 – overlay codes cover the same geography, so a rate center is served by all of them.

22 assigned blocks – 2.8% of 619
8 holders of record
19 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
619-215 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
619-313 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
619-319 T-Mobile T-MOBILE USA, INC. – yes yes
619-347 T-Mobile T-MOBILE USA, INC. 2001-09-19 yes yes
619-365 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
619-435 AT&T PACIFIC BELL – no yes
619-437 AT&T PACIFIC BELL – no yes
619-459 T-Mobile T-MOBILE USA, INC. 2001-02-22 yes yes
619-519 T-Mobile T-MOBILE USA, INC. 2002-09-19 yes yes
619-522 AT&T PACIFIC BELL – yes yes
619-537 AT&T PACIFIC BELL 2007-07-23 yes yes
619-545 AT&T PACIFIC BELL – no yes
619-554 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
619-568 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
619-675 T-Mobile T-MOBILE USA, INC. 2002-03-21 yes yes
619-762 T-Mobile T-MOBILE USA, INC. 2015-06-16 yes yes
619-775 Onvoy ONVOY, LLC - CA 2016-10-10 yes yes
619-805 T-Mobile T-MOBILE USA, INC. – yes yes
619-841 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
619-865 T-Mobile T-MOBILE USA, INC. – yes yes
619-878 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA – yes yes
619-996 Onvoy ONVOY, LLC - CA – 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
T-MOBILE USA, INC. T-Mobile 8 36.4%
PACIFIC BELL AT&T 5 22.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 2 9.1%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 2 9.1%
ONVOY, LLC - CA Onvoy 2 9.1%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 4.5%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 4.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 4.5%

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 CORONADO in area code 619?

22 blocks: 215, 313, 319, 347, 365, 435, 437, 459, 519, 522, 537, 545 and 10 more, all listed in the table above.

Which carriers have numbers in CORONADO?

T-MOBILE USA, INC. (8 blocks), PACIFIC BELL (5 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (2 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (2 blocks), ONVOY, LLC - CA (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - 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 CORONADO 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