NPA-NXX - 312-664
This is the 312-664 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 312-664 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 Regular Landline registered to At&t Illinois. 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 312-664 subcode.
Looking for a different number? Follow a link below to see our recently active.
740-490-4383 631-521-8205 980-215-8074 385-233-4225 631-865-4577704-951-6528 814-240-5218 814-792-8482 561-819-6229 281-941-9327