Prefix Information

The prefix 664 is part of area code 773 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (773-664-0000 through 773-664-9999).

Browse Numbers in This Prefix

773-664-0000-0999 773-664-1000-1999 773-664-2000-2999 773-664-3000-3999 773-664-4000-4999 773-664-5000-5999 773-664-6000-6999 773-664-7000-7999 773-664-8000-8999 773-664-9000-9999

Sample Numbers

(773) 664-0000 (773) 664-1234 (773) 664-2000 (773) 664-3333 (773) 664-4444 (773) 664-5555 (773) 664-6000 (773) 664-7777 (773) 664-8888 (773) 664-9999