Prefix Information

The prefix 864 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-864-0000 through 312-864-9999).

Browse Numbers in This Prefix

312-864-0000-0999 312-864-1000-1999 312-864-2000-2999 312-864-3000-3999 312-864-4000-4999 312-864-5000-5999 312-864-6000-6999 312-864-7000-7999 312-864-8000-8999 312-864-9000-9999

Sample Numbers

(312) 864-0000 (312) 864-1234 (312) 864-2000 (312) 864-3333 (312) 864-4444 (312) 864-5555 (312) 864-6000 (312) 864-7777 (312) 864-8888 (312) 864-9999