Prefix Information

The prefix 421 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-421-0000 through 779-421-9999).

Browse Numbers in This Prefix

779-421-0000-0999 779-421-1000-1999 779-421-2000-2999 779-421-3000-3999 779-421-4000-4999 779-421-5000-5999 779-421-6000-6999 779-421-7000-7999 779-421-8000-8999 779-421-9000-9999

Sample Numbers

(779) 421-0000 (779) 421-1234 (779) 421-2000 (779) 421-3333 (779) 421-4444 (779) 421-5555 (779) 421-6000 (779) 421-7777 (779) 421-8888 (779) 421-9999