Prefix Information

The prefix 320 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-320-0000 through 312-320-9999).

Browse Numbers in This Prefix

312-320-0000-0999 312-320-1000-1999 312-320-2000-2999 312-320-3000-3999 312-320-4000-4999 312-320-5000-5999 312-320-6000-6999 312-320-7000-7999 312-320-8000-8999 312-320-9000-9999

Sample Numbers

(312) 320-0000 (312) 320-1234 (312) 320-2000 (312) 320-3333 (312) 320-4444 (312) 320-5555 (312) 320-6000 (312) 320-7777 (312) 320-8888 (312) 320-9999