Prefix overview
Phone numbers in prefix 240-474
This page covers the 240-474 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
240-474
RATE CENTER
GAITHERSBG
CARRIER
BALTIMORE-WASHINGTON TELEPHONE (BWT)
MD
Prefix range
The prefix 240-474 includes numbers from 2404740000 to 2404749999.
This range is associated with the GAITHERSBG rate center and was originally assigned to BALTIMORE-WASHINGTON TELEPHONE (BWT).
Numbers in this prefix
20 numbers