NPA-NXX - 618-431

This is the 618-431 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. 618
3. 618-431

The 618-431 subcode mainly covers Vandalia in Fayette county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Illinois 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 Illinois office.
Recently there have been an increase in reported calls, we've had over 22140 comments across our systems for the 618-431 subcode.