Prefix Information

The prefix 664 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-664-0000 through 779-664-9999).

Browse Numbers in This Prefix

779-664-0000-0999 779-664-1000-1999 779-664-2000-2999 779-664-3000-3999 779-664-4000-4999 779-664-5000-5999 779-664-6000-6999 779-664-7000-7999 779-664-8000-8999 779-664-9000-9999

Sample Numbers

(779) 664-0000 (779) 664-1234 (779) 664-2000 (779) 664-3333 (779) 664-4444 (779) 664-5555 (779) 664-6000 (779) 664-7777 (779) 664-8888 (779) 664-9999