Prefix Information

The prefix 638 is part of area code 720 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (720-638-0000 through 720-638-9999).

Browse Numbers in This Prefix

720-638-0000-0999 720-638-1000-1999 720-638-2000-2999 720-638-3000-3999 720-638-4000-4999 720-638-5000-5999 720-638-6000-6999 720-638-7000-7999 720-638-8000-8999 720-638-9000-9999

Sample Numbers

(720) 638-0000 (720) 638-1234 (720) 638-2000 (720) 638-3333 (720) 638-4444 (720) 638-5555 (720) 638-6000 (720) 638-7777 (720) 638-8888 (720) 638-9999