Prefix overview
Phone numbers in prefix 603-370
This page covers the 603-370 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
603-370
RATE CENTER
CANDIA
CARRIER
BELL ATLANTIC MOBILE, INC
NH
Prefix range
The prefix 603-370 includes numbers from 6033700000 to 6033709999.
This range is associated with the CANDIA rate center and was originally assigned to BELL ATLANTIC MOBILE, INC.
Numbers in this prefix
20 numbers