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

DULZURA prefixes in area code 619

NANPA records 8 assigned NXX blocks to rate center DULZURA in area code 619, 1.0% 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 TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (1), PACIFIC BELL (1). The earliest assignment on record here is 2001-01-25 and the most recent 2021-12-09. 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 858 – overlay codes cover the same geography, so a rate center is served by all of them.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
619-268 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
619-345 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2001-01-25 yes yes
619-468 AT&T PACIFIC BELL – yes yes
619-492 Onvoy ONVOY, LLC - CA – yes yes
619-625 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
619-774 NORTH COUNTY COMMUNICATION CORPORATION - CA – no yes
619-826 AT&T AT&T ENTERPRISES, LLC 2011-06-20 yes yes
619-975 AT&T NEW CINGULAR WIRELESS PCS, LLC 2021-12-09 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
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 12.5%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 1 12.5%
PACIFIC BELL AT&T 1 12.5%
ONVOY, LLC - CA Onvoy 1 12.5%
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 1 12.5%
NORTH COUNTY COMMUNICATION CORPORATION - CA – 1 12.5%
AT&T ENTERPRISES, LLC AT&T 1 12.5%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 12.5%

Frequently asked

Which prefixes belong to DULZURA in area code 619?

8 blocks: 268, 345, 468, 492, 625, 774, 826, 975. The table above gives the holder of each.

Which carriers have numbers in DULZURA?

TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1 block), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (1 block), PACIFIC BELL (1 block), ONVOY, LLC - CA (1 block), BANDWIDTH.COM CLEC, LLC - CA (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 DULZURA 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