Prefix Information

The prefix 581 is part of area code 815 serving Rockford, Illinois.

This exchange contains 10,000 possible phone numbers (815-581-0000 through 815-581-9999).

Browse Numbers in This Prefix

815-581-0000-0999 815-581-1000-1999 815-581-2000-2999 815-581-3000-3999 815-581-4000-4999 815-581-5000-5999 815-581-6000-6999 815-581-7000-7999 815-581-8000-8999 815-581-9000-9999

Sample Numbers

(815) 581-0000 (815) 581-1234 (815) 581-2000 (815) 581-3333 (815) 581-4444 (815) 581-5555 (815) 581-6000 (815) 581-7777 (815) 581-8888 (815) 581-9999