Prefix overview
Phone numbers in prefix 603-392
This page covers the 603-392 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
603-392
RATE CENTER
WINCHESTER
CARRIER
COMCAST IP PHONE, LLC
NH
Prefix range
The prefix 603-392 includes numbers from 6033920000 to 6033929999.
This range is associated with the WINCHESTER rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers