Prefix overview
Phone numbers in prefix 603-303
This page covers the 603-303 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
603-303
RATE CENTER
RAYMOND
CARRIER
BELL ATLANTIC MOBILE, INC
NH
Prefix range
The prefix 603-303 includes numbers from 6033030000 to 6033039999.
This range is associated with the RAYMOND rate center and was originally assigned to BELL ATLANTIC MOBILE, INC.
Numbers in this prefix
20 numbers