Prefix Information

The prefix 858 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-858-0000 through 312-858-9999).

Browse Numbers in This Prefix

312-858-0000-0999 312-858-1000-1999 312-858-2000-2999 312-858-3000-3999 312-858-4000-4999 312-858-5000-5999 312-858-6000-6999 312-858-7000-7999 312-858-8000-8999 312-858-9000-9999

Sample Numbers

(312) 858-0000 (312) 858-1234 (312) 858-2000 (312) 858-3333 (312) 858-4444 (312) 858-5555 (312) 858-6000 (312) 858-7777 (312) 858-8888 (312) 858-9999