Prefix overview
Phone numbers in prefix 660-326
This page covers the 660-326 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
660-326
RATE CENTER
DENVER
CARRIER
GRAND RIVER MUTUAL TEL CO
MO
Prefix range
The prefix 660-326 includes numbers from 6603260000 to 6603269999.
This range is associated with the DENVER rate center and was originally assigned to GRAND RIVER MUTUAL TEL CO.
Numbers in this prefix
20 numbers