Prefix overview
Phone numbers in prefix 603-255
This page covers the 603-255 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
603-255
RATE CENTER
MANCHESTER
CARRIER
CSC WIRELESS, LLC
NH
Prefix range
The prefix 603-255 includes numbers from 6032550000 to 6032559999.
This range is associated with the MANCHESTER rate center and was originally assigned to CSC WIRELESS, LLC.
Numbers in this prefix
20 numbers