Prefix Information

The prefix 504 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-504-0000 through 815-504-9999).

Browse Numbers in This Prefix

815-504-0000-0999 815-504-1000-1999 815-504-2000-2999 815-504-3000-3999 815-504-4000-4999 815-504-5000-5999 815-504-6000-6999 815-504-7000-7999 815-504-8000-8999 815-504-9000-9999

Sample Numbers

(815) 504-0000 (815) 504-1234 (815) 504-2000 (815) 504-3333 (815) 504-4444 (815) 504-5555 (815) 504-6000 (815) 504-7777 (815) 504-8888 (815) 504-9999