Prefix Information

The prefix 166 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-166-0000 through 312-166-9999).

Browse Numbers in This Prefix

312-166-0000-0999 312-166-1000-1999 312-166-2000-2999 312-166-3000-3999 312-166-4000-4999 312-166-5000-5999 312-166-6000-6999 312-166-7000-7999 312-166-8000-8999 312-166-9000-9999

Sample Numbers

(312) 166-0000 (312) 166-1234 (312) 166-2000 (312) 166-3333 (312) 166-4444 (312) 166-5555 (312) 166-6000 (312) 166-7777 (312) 166-8888 (312) 166-9999