Prefix Information

The prefix 257 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-257-0000 through 815-257-9999).

Browse Numbers in This Prefix

815-257-0000-0999 815-257-1000-1999 815-257-2000-2999 815-257-3000-3999 815-257-4000-4999 815-257-5000-5999 815-257-6000-6999 815-257-7000-7999 815-257-8000-8999 815-257-9000-9999

Sample Numbers

(815) 257-0000 (815) 257-1234 (815) 257-2000 (815) 257-3333 (815) 257-4444 (815) 257-5555 (815) 257-6000 (815) 257-7777 (815) 257-8888 (815) 257-9999