Prefix 619-404 — El Cajon, CA
619-404 identifies a block of numbers in El Cajon, CA, within the 619 area code. Every US prefix is tied to exactly one rate center; this one is El Cajon.
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 — 619-404 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.
The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned August 12, 2016. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 619-401 | El Cajon | PACIFIC BELL |
| 619-402 | El Cajon | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
| 619-403 | La Mesa | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
| 619-405 | San Diego:san Diego Da | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 619-406 | San Diego:san Diego Da | SPOK, INC. |
| 619-407 | Chula Vista | PACIFIC BELL |
FAQ
Where is 619-404 located?
The prefix is assigned to the El Cajon rate center in CA, area code 619. It is part of the San Diego-Cula Vista-Carlsbad, CA Metropolitan Statistical Area.
Which company owns 619-404 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 619-404 safe to answer?
The prefix itself says nothing about the caller. Legitimate El Cajon businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.