Prefix Information

The prefix 640 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-640-0000 through 815-640-9999).

Browse Numbers in This Prefix

815-640-0000-0999 815-640-1000-1999 815-640-2000-2999 815-640-3000-3999 815-640-4000-4999 815-640-5000-5999 815-640-6000-6999 815-640-7000-7999 815-640-8000-8999 815-640-9000-9999

Sample Numbers

(815) 640-0000 (815) 640-1234 (815) 640-2000 (815) 640-3333 (815) 640-4444 (815) 640-5555 (815) 640-6000 (815) 640-7777 (815) 640-8888 (815) 640-9999