Prefix Information

The prefix 850 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-850-0000 through 312-850-9999).

Browse Numbers in This Prefix

312-850-0000-0999 312-850-1000-1999 312-850-2000-2999 312-850-3000-3999 312-850-4000-4999 312-850-5000-5999 312-850-6000-6999 312-850-7000-7999 312-850-8000-8999 312-850-9000-9999

Sample Numbers

(312) 850-0000 (312) 850-1234 (312) 850-2000 (312) 850-3333 (312) 850-4444 (312) 850-5555 (312) 850-6000 (312) 850-7777 (312) 850-8888 (312) 850-9999