Prefix Information

The prefix 637 is part of area code 779 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (779-637-0000 through 779-637-9999).

Browse Numbers in This Prefix

779-637-0000-0999 779-637-1000-1999 779-637-2000-2999 779-637-3000-3999 779-637-4000-4999 779-637-5000-5999 779-637-6000-6999 779-637-7000-7999 779-637-8000-8999 779-637-9000-9999

Sample Numbers

(779) 637-0000 (779) 637-1234 (779) 637-2000 (779) 637-3333 (779) 637-4444 (779) 637-5555 (779) 637-6000 (779) 637-7777 (779) 637-8888 (779) 637-9999