Prefix Information

The prefix 640 is part of area code 303 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (303-640-0000 through 303-640-9999).

Browse Numbers in This Prefix

303-640-0000-0999 303-640-1000-1999 303-640-2000-2999 303-640-3000-3999 303-640-4000-4999 303-640-5000-5999 303-640-6000-6999 303-640-7000-7999 303-640-8000-8999 303-640-9000-9999

Sample Numbers

(303) 640-0000 (303) 640-1234 (303) 640-2000 (303) 640-3333 (303) 640-4444 (303) 640-5555 (303) 640-6000 (303) 640-7777 (303) 640-8888 (303) 640-9999