NPA-NXX - 406-859

This is the 406-859 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. 406
3. 406-859

The 406-859 subcode mainly covers Philipsburg in Granite county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Montana state. Many of the numbers in this subcode are Regular Landline registered to Blackfoot Telephone Cooperative. We hear they employ a large number of people in the Montana office.
Recently there have been an increase in reported calls, we've had over 3079 comments across our systems for the 406-859 subcode.