Prefix Information

The prefix 256 is part of area code 303 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (303-256-0000 through 303-256-9999).

Browse Numbers in This Prefix

303-256-0000-0999 303-256-1000-1999 303-256-2000-2999 303-256-3000-3999 303-256-4000-4999 303-256-5000-5999 303-256-6000-6999 303-256-7000-7999 303-256-8000-8999 303-256-9000-9999

Sample Numbers

(303) 256-0000 (303) 256-1234 (303) 256-2000 (303) 256-3333 (303) 256-4444 (303) 256-5555 (303) 256-6000 (303) 256-7777 (303) 256-8888 (303) 256-9999