Prefix overview
Phone numbers in prefix 408-343
This page covers the 408-343 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
408-343
RATE CENTER
SNJS WEST
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 408-343 includes numbers from 4083430000 to 4083439999.
This range is associated with the SNJS WEST rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers