Prefix overview
Phone numbers in prefix 603-455
This page covers the 603-455 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
603-455
RATE CENTER
LACONIA
CARRIER
UNITED STATES CELLULAR - NH
NH
Prefix range
The prefix 603-455 includes numbers from 6034550000 to 6034559999.
This range is associated with the LACONIA rate center and was originally assigned to UNITED STATES CELLULAR - NH.
Numbers in this prefix
20 numbers