NPA-NXX - 312-623
This is the 312-623 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 312-623 subcode mainly covers Chicago in Cook 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 5194675 comments across our systems for the 312-623 subcode.
Looking for a different number? Follow a link below to see our recently active.
816-874-3137 413-885-8454 858-500-5620 713-619-3995 276-759-9516503-773-8134 850-240-9572 512-323-6264 502-202-6147 319-363-4050