Prefix overview
Phone numbers in prefix 603-346
This page covers the 603-346 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
603-346
RATE CENTER
PLYMOUTH
CARRIER
HD CARRIER LLC
NH
Prefix range
The prefix 603-346 includes numbers from 6033460000 to 6033469999.
This range is associated with the PLYMOUTH rate center and was originally assigned to HD CARRIER LLC.
Numbers in this prefix
20 numbers