Prefix Information

The prefix 640 is part of area code 720 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (720-640-0000 through 720-640-9999).

Browse Numbers in This Prefix

720-640-0000-0999 720-640-1000-1999 720-640-2000-2999 720-640-3000-3999 720-640-4000-4999 720-640-5000-5999 720-640-6000-6999 720-640-7000-7999 720-640-8000-8999 720-640-9000-9999

Sample Numbers

(720) 640-0000 (720) 640-1234 (720) 640-2000 (720) 640-3333 (720) 640-4444 (720) 640-5555 (720) 640-6000 (720) 640-7777 (720) 640-8888 (720) 640-9999