Prefix Information

The prefix 423 is part of area code 720 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (720-423-0000 through 720-423-9999).

Browse Numbers in This Prefix

720-423-0000-0999 720-423-1000-1999 720-423-2000-2999 720-423-3000-3999 720-423-4000-4999 720-423-5000-5999 720-423-6000-6999 720-423-7000-7999 720-423-8000-8999 720-423-9000-9999

Sample Numbers

(720) 423-0000 (720) 423-1234 (720) 423-2000 (720) 423-3333 (720) 423-4444 (720) 423-5555 (720) 423-6000 (720) 423-7777 (720) 423-8888 (720) 423-9999