Prefix overview
Phone numbers in prefix 240-404
This page covers the 240-404 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
240-404
RATE CENTER
GAITHERSBG
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
MD
Prefix range
The prefix 240-404 includes numbers from 2404040000 to 2404049999.
This range is associated with the GAITHERSBG rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers