Prefix Information

The prefix 604 is part of area code 720 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (720-604-0000 through 720-604-9999).

Browse Numbers in This Prefix

720-604-0000-0999 720-604-1000-1999 720-604-2000-2999 720-604-3000-3999 720-604-4000-4999 720-604-5000-5999 720-604-6000-6999 720-604-7000-7999 720-604-8000-8999 720-604-9000-9999

Sample Numbers

(720) 604-0000 (720) 604-1234 (720) 604-2000 (720) 604-3333 (720) 604-4444 (720) 604-5555 (720) 604-6000 (720) 604-7777 (720) 604-8888 (720) 604-9999