Prefix Information

The prefix 123 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-123-0000 through 815-123-9999).

Browse Numbers in This Prefix

815-123-0000-0999 815-123-1000-1999 815-123-2000-2999 815-123-3000-3999 815-123-4000-4999 815-123-5000-5999 815-123-6000-6999 815-123-7000-7999 815-123-8000-8999 815-123-9000-9999

Sample Numbers

(815) 123-0000 (815) 123-1234 (815) 123-2000 (815) 123-3333 (815) 123-4444 (815) 123-5555 (815) 123-6000 (815) 123-7777 (815) 123-8888 (815) 123-9999