Prefix Information

The prefix 666 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-666-0000 through 815-666-9999).

Browse Numbers in This Prefix

815-666-0000-0999 815-666-1000-1999 815-666-2000-2999 815-666-3000-3999 815-666-4000-4999 815-666-5000-5999 815-666-6000-6999 815-666-7000-7999 815-666-8000-8999 815-666-9000-9999

Sample Numbers

(815) 666-0000 (815) 666-1234 (815) 666-2000 (815) 666-3333 (815) 666-4444 (815) 666-5555 (815) 666-6000 (815) 666-7777 (815) 666-8888 (815) 666-9999