Prefix overview
Phone numbers in prefix 240-357
This page covers the 240-357 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
240-357
RATE CENTER
FREDERICK
CARRIER
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
MD
Prefix range
The prefix 240-357 includes numbers from 2403570000 to 2403579999.
This range is associated with the FREDERICK rate center and was originally assigned to CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD.
Numbers in this prefix
20 numbers