Prefix overview
Phone numbers in prefix 240-300
This page covers the 240-300 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
240-300
RATE CENTER
WALDORF
CARRIER
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD
MD
Prefix range
The prefix 240-300 includes numbers from 2403000000 to 2403009999.
This range is associated with the WALDORF rate center and was originally assigned to CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD.
Numbers in this prefix
20 numbers