Prefix Information

The prefix 742 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-742-0000 through 312-742-9999).

Browse Numbers in This Prefix

312-742-0000-0999 312-742-1000-1999 312-742-2000-2999 312-742-3000-3999 312-742-4000-4999 312-742-5000-5999 312-742-6000-6999 312-742-7000-7999 312-742-8000-8999 312-742-9000-9999

Sample Numbers

(312) 742-0000 (312) 742-1234 (312) 742-2000 (312) 742-3333 (312) 742-4444 (312) 742-5555 (312) 742-6000 (312) 742-7777 (312) 742-8888 (312) 742-9999