Prefix Information

The prefix 604 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-604-0000 through 779-604-9999).

Browse Numbers in This Prefix

779-604-0000-0999 779-604-1000-1999 779-604-2000-2999 779-604-3000-3999 779-604-4000-4999 779-604-5000-5999 779-604-6000-6999 779-604-7000-7999 779-604-8000-8999 779-604-9000-9999

Sample Numbers

(779) 604-0000 (779) 604-1234 (779) 604-2000 (779) 604-3333 (779) 604-4444 (779) 604-5555 (779) 604-6000 (779) 604-7777 (779) 604-8888 (779) 604-9999