Prefix overview
Phone numbers in prefix 657-402
This page covers the 657-402 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
657-402
RATE CENTER
WESTMINSTR
CARRIER
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
CA
Prefix range
The prefix 657-402 includes numbers from 6574020000 to 6574029999.
This range is associated with the WESTMINSTR rate center and was originally assigned to CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA.
Numbers in this prefix
20 numbers