NPA-NXX - 307-441

This is the 307-441 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. 307
3. 307-441

The 307-441 subcode mainly covers Casper in Natrona county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Wyoming state. Many of the numbers in this subcode are Regular Landline registered to Big River Telephone. We hear they employ a large number of people in the Wyoming office.
Recently there have been an increase in reported calls, we've had over 75450 comments across our systems for the 307-441 subcode.