NPA-NXX - 779-456
This is the 779-456 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!
The 779-456 subcode mainly covers Joliet in Will 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 T-mobile. 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 677560 comments across our systems for the 779-456 subcode.