Prefix overview
Phone numbers in prefix 240-420
This page covers the 240-420 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
240-420
RATE CENTER
HAGERSTOWN
CARRIER
VERIZON MARYLAND, INC.
MD
Prefix range
The prefix 240-420 includes numbers from 2404200000 to 2404209999.
This range is associated with the HAGERSTOWN rate center and was originally assigned to VERIZON MARYLAND, INC..
Numbers in this prefix
20 numbers