Prefix Information

The prefix 523 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-523-0000 through 312-523-9999).

Browse Numbers in This Prefix

312-523-0000-0999 312-523-1000-1999 312-523-2000-2999 312-523-3000-3999 312-523-4000-4999 312-523-5000-5999 312-523-6000-6999 312-523-7000-7999 312-523-8000-8999 312-523-9000-9999

Sample Numbers

(312) 523-0000 (312) 523-1234 (312) 523-2000 (312) 523-3333 (312) 523-4444 (312) 523-5555 (312) 523-6000 (312) 523-7777 (312) 523-8888 (312) 523-9999