Prefix Information

The prefix 740 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-740-0000 through 312-740-9999).

Browse Numbers in This Prefix

312-740-0000-0999 312-740-1000-1999 312-740-2000-2999 312-740-3000-3999 312-740-4000-4999 312-740-5000-5999 312-740-6000-6999 312-740-7000-7999 312-740-8000-8999 312-740-9000-9999

Sample Numbers

(312) 740-0000 (312) 740-1234 (312) 740-2000 (312) 740-3333 (312) 740-4444 (312) 740-5555 (312) 740-6000 (312) 740-7777 (312) 740-8888 (312) 740-9999