NPA-NXX - 309-430

This is the 309-430 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. 309
3. 309-430

The 309-430 subcode mainly covers Rock Island in Rock Island 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 Geneseo Communications Services. 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 147546 comments across our systems for the 309-430 subcode.