Prefix Information

The prefix 637 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-637-0000 through 815-637-9999).

Browse Numbers in This Prefix

815-637-0000-0999 815-637-1000-1999 815-637-2000-2999 815-637-3000-3999 815-637-4000-4999 815-637-5000-5999 815-637-6000-6999 815-637-7000-7999 815-637-8000-8999 815-637-9000-9999

Sample Numbers

(815) 637-0000 (815) 637-1234 (815) 637-2000 (815) 637-3333 (815) 637-4444 (815) 637-5555 (815) 637-6000 (815) 637-7777 (815) 637-8888 (815) 637-9999