Prefix overview
Phone numbers in prefix 603-364
This page covers the 603-364 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
603-364
RATE CENTER
GLNTNIRWRS
CARRIER
UNION TEL. CO.
NH
Prefix range
The prefix 603-364 includes numbers from 6033640000 to 6033649999.
This range is associated with the GLNTNIRWRS rate center and was originally assigned to UNION TEL. CO..
Numbers in this prefix
20 numbers