Prefix Information

The prefix 743 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-743-0000 through 312-743-9999).

Browse Numbers in This Prefix

312-743-0000-0999 312-743-1000-1999 312-743-2000-2999 312-743-3000-3999 312-743-4000-4999 312-743-5000-5999 312-743-6000-6999 312-743-7000-7999 312-743-8000-8999 312-743-9000-9999

Sample Numbers

(312) 743-0000 (312) 743-1234 (312) 743-2000 (312) 743-3333 (312) 743-4444 (312) 743-5555 (312) 743-6000 (312) 743-7777 (312) 743-8888 (312) 743-9999