Prefix overview
Phone numbers in prefix 858-404
This page covers the 858-404 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
858-404
RATE CENTER
LA JOLLA
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 858-404 includes numbers from 8584040000 to 8584049999.
This range is associated with the LA JOLLA rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers