Prefix Information

The prefix 660 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-660-0000 through 312-660-9999).

Browse Numbers in This Prefix

312-660-0000-0999 312-660-1000-1999 312-660-2000-2999 312-660-3000-3999 312-660-4000-4999 312-660-5000-5999 312-660-6000-6999 312-660-7000-7999 312-660-8000-8999 312-660-9000-9999

Sample Numbers

(312) 660-0000 (312) 660-1234 (312) 660-2000 (312) 660-3333 (312) 660-4444 (312) 660-5555 (312) 660-6000 (312) 660-7777 (312) 660-8888 (312) 660-9999