Prefix Information

The prefix 421 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-421-0000 through 815-421-9999).

Browse Numbers in This Prefix

815-421-0000-0999 815-421-1000-1999 815-421-2000-2999 815-421-3000-3999 815-421-4000-4999 815-421-5000-5999 815-421-6000-6999 815-421-7000-7999 815-421-8000-8999 815-421-9000-9999

Sample Numbers

(815) 421-0000 (815) 421-1234 (815) 421-2000 (815) 421-3333 (815) 421-4444 (815) 421-5555 (815) 421-6000 (815) 421-7777 (815) 421-8888 (815) 421-9999