Prefix Information

The prefix 400 is part of area code 872 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (872-400-0000 through 872-400-9999).

Browse Numbers in This Prefix

872-400-0000-0999 872-400-1000-1999 872-400-2000-2999 872-400-3000-3999 872-400-4000-4999 872-400-5000-5999 872-400-6000-6999 872-400-7000-7999 872-400-8000-8999 872-400-9000-9999

Sample Numbers

(872) 400-0000 (872) 400-1234 (872) 400-2000 (872) 400-3333 (872) 400-4444 (872) 400-5555 (872) 400-6000 (872) 400-7777 (872) 400-8888 (872) 400-9999