Prefix Information

The prefix 866 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-866-0000 through 779-866-9999).

Browse Numbers in This Prefix

779-866-0000-0999 779-866-1000-1999 779-866-2000-2999 779-866-3000-3999 779-866-4000-4999 779-866-5000-5999 779-866-6000-6999 779-866-7000-7999 779-866-8000-8999 779-866-9000-9999

Sample Numbers

(779) 866-0000 (779) 866-1234 (779) 866-2000 (779) 866-3333 (779) 866-4444 (779) 866-5555 (779) 866-6000 (779) 866-7777 (779) 866-8888 (779) 866-9999