Prefix Information

The prefix 556 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-556-0000 through 779-556-9999).

Browse Numbers in This Prefix

779-556-0000-0999 779-556-1000-1999 779-556-2000-2999 779-556-3000-3999 779-556-4000-4999 779-556-5000-5999 779-556-6000-6999 779-556-7000-7999 779-556-8000-8999 779-556-9000-9999

Sample Numbers

(779) 556-0000 (779) 556-1234 (779) 556-2000 (779) 556-3333 (779) 556-4444 (779) 556-5555 (779) 556-6000 (779) 556-7777 (779) 556-8888 (779) 556-9999