NPA-NXX - 312-404
This is the 312-404 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 312-404 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 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 5194675 comments across our systems for the 312-404 subcode.
Looking for a different number? Follow a link below to see our recently active.
408-378-7011 919-597-9582 216-632-1739 618-671-6154 608-819-7665626-841-5431 360-801-2472 519-646-8897 704-426-9319 414-858-9265