Prefix Information

The prefix 863 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-863-0000 through 312-863-9999).

Browse Numbers in This Prefix

312-863-0000-0999 312-863-1000-1999 312-863-2000-2999 312-863-3000-3999 312-863-4000-4999 312-863-5000-5999 312-863-6000-6999 312-863-7000-7999 312-863-8000-8999 312-863-9000-9999

Sample Numbers

(312) 863-0000 (312) 863-1234 (312) 863-2000 (312) 863-3333 (312) 863-4444 (312) 863-5555 (312) 863-6000 (312) 863-7777 (312) 863-8888 (312) 863-9999