Prefix 619-310 — San Diego:san Diego Da, CA

NANPA CO code assignment, current as of July 28, 2026.

Area code
619
Prefix (NXX)
310
State
California
Time zone
Pacific
Code holder
AIRESPRING, INC.
OCN
996H
Pooled
Yes (thousands-block pooling)
Assigned
2018-05-08
LATA
732

619-310 identifies a block of numbers in San Diego:san Diego Da, CA, within the 619 area code. Every US prefix is tied to exactly one rate center; this one is San Diego:san Diego Da.

The rate center lies in the San Diego-Cula Vista-Carlsbad, CA Metropolitan Statistical Area. The serving LATA is 732. Local time follows the Pacific zone.

Treat the on-screen number as a hint, not evidence — 619-310 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.

NANPA's central-office code records list AIRESPRING, INC. (OCN 996H) as the code holder, assigned May 8, 2018. Because 619-310 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Neighboring prefixes

Prefixes adjacent to 619-310
PrefixRate centerCode holder
619-307 San Diego:san Diego Da NEW CINGULAR WIRELESS PCS, LLC
619-308 San Diego:san Diego Da U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS
619-309 San Diego:san Diego Da NEW CINGULAR WIRELESS PCS, LLC
619-312 El Cajon COMCAST PHONE OF CALIFORNIA, LLC
619-313 Coronado TELEPORT COMMUNICATIONS AMERICA, LLC - CA
619-314 San Diego:san Diego Da CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA

FAQ

Where is 619-310 located?

The prefix is assigned to the San Diego:san Diego Da rate center in CA, area code 619. It is part of the San Diego-Cula Vista-Carlsbad, CA Metropolitan Statistical Area.

Which company owns 619-310 numbers?

AIRESPRING, INC. holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.

Is a call from 619-310 safe to answer?

The prefix itself says nothing about the caller. Legitimate San Diego:san Diego Da businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.