Prefix overview
Phone numbers in prefix 603-389
This page covers the 603-389 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
603-389
RATE CENTER
DURHAM
CARRIER
PAETEC ITEL, LLC
NH
Prefix range
The prefix 603-389 includes numbers from 6033890000 to 6033899999.
This range is associated with the DURHAM rate center and was originally assigned to PAETEC ITEL, LLC.
Numbers in this prefix
20 numbers