Prefix Information

The prefix 120 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-120-0000 through 312-120-9999).

Browse Numbers in This Prefix

312-120-0000-0999 312-120-1000-1999 312-120-2000-2999 312-120-3000-3999 312-120-4000-4999 312-120-5000-5999 312-120-6000-6999 312-120-7000-7999 312-120-8000-8999 312-120-9000-9999

Sample Numbers

(312) 120-0000 (312) 120-1234 (312) 120-2000 (312) 120-3333 (312) 120-4444 (312) 120-5555 (312) 120-6000 (312) 120-7777 (312) 120-8888 (312) 120-9999