NPA-NXX - 660-666

This is the 660-666 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 660
3. 660-666

The 660-666 subcode mainly covers Darlington in Gentry county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Missouri state. Many of the numbers in this subcode are Regular Landline registered to Grand River Mutual Telephone Corporation. We hear they employ a large number of people in the Missouri office.
Recently there have been an increase in reported calls, we've had over 6738 comments across our systems for the 660-666 subcode.