Prefix Information

The prefix 583 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-583-0000 through 815-583-9999).

Browse Numbers in This Prefix

815-583-0000-0999 815-583-1000-1999 815-583-2000-2999 815-583-3000-3999 815-583-4000-4999 815-583-5000-5999 815-583-6000-6999 815-583-7000-7999 815-583-8000-8999 815-583-9000-9999

Sample Numbers

(815) 583-0000 (815) 583-1234 (815) 583-2000 (815) 583-3333 (815) 583-4444 (815) 583-5555 (815) 583-6000 (815) 583-7777 (815) 583-8888 (815) 583-9999