Prefix Information

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

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

Browse Numbers in This Prefix

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

Sample Numbers

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