Prefix Information

The prefix 031 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-031-0000 through 815-031-9999).

Browse Numbers in This Prefix

815-031-0000-0999 815-031-1000-1999 815-031-2000-2999 815-031-3000-3999 815-031-4000-4999 815-031-5000-5999 815-031-6000-6999 815-031-7000-7999 815-031-8000-8999 815-031-9000-9999

Sample Numbers

(815) 031-0000 (815) 031-1234 (815) 031-2000 (815) 031-3333 (815) 031-4444 (815) 031-5555 (815) 031-6000 (815) 031-7777 (815) 031-8888 (815) 031-9999