NPA-NXX - 217-343

This is the 217-343 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. 217
3. 217-343

The 217-343 subcode mainly covers Effingham in Effingham 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 Cellular (Dedicated) registered to At&t Mobility. 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 34242 comments across our systems for the 217-343 subcode.