Prefix 619-317 — San Diego:san Diego Da, CA

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

Area code
619
Prefix (NXX)
317
State
California
Time zone
Pacific
Code holder
T-MOBILE USA, INC.
OCN
6529
Pooled
Yes (thousands-block pooling)
Assigned
2015-09-22
LATA
732

A phone number starting 619-317 was issued in the San Diego:san Diego Da rate center of CA — part of area code 619.

Code-holder of record: T-MOBILE USA, INC. (OCN 6529), assigned September 22, 2015. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 619-317 numbers may be served by different companies.

A scammer can display 619-317 without ever touching CA. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

San Diego:san Diego Da is part of the San Diego-Cula Vista-Carlsbad, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 732. Numbers here keep Pacific time.

Neighboring prefixes

Prefixes adjacent to 619-317
PrefixRate centerCode holder
619-314 San Diego:san Diego Da CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
619-315 La Mesa TELEPORT COMMUNICATIONS AMERICA, LLC - CA
619-316 San Diego:san Diego Da NEW CINGULAR WIRELESS PCS, LLC
619-318 San Diego:san Diego Da CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
619-319 Coronado T-MOBILE USA, INC.
619-320 Harbison-alpine LEVEL 3 COMMUNICATIONS, LLC - CA

FAQ

Where is 619-317 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 619-317 numbers?

T-MOBILE USA, 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 619-317 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.