Prefix Information

The prefix 817 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-817-0000 through 312-817-9999).

Browse Numbers in This Prefix

312-817-0000-0999 312-817-1000-1999 312-817-2000-2999 312-817-3000-3999 312-817-4000-4999 312-817-5000-5999 312-817-6000-6999 312-817-7000-7999 312-817-8000-8999 312-817-9000-9999

Sample Numbers

(312) 817-0000 (312) 817-1234 (312) 817-2000 (312) 817-3333 (312) 817-4444 (312) 817-5555 (312) 817-6000 (312) 817-7777 (312) 817-8888 (312) 817-9999