Prefix Information

The prefix 623 is part of area code 303 serving Denver, Colorado.

This exchange contains 10,000 possible phone numbers (303-623-0000 through 303-623-9999).

Browse Numbers in This Prefix

303-623-0000-0999 303-623-1000-1999 303-623-2000-2999 303-623-3000-3999 303-623-4000-4999 303-623-5000-5999 303-623-6000-6999 303-623-7000-7999 303-623-8000-8999 303-623-9000-9999

Sample Numbers

(303) 623-0000 (303) 623-1234 (303) 623-2000 (303) 623-3333 (303) 623-4444 (303) 623-5555 (303) 623-6000 (303) 623-7777 (303) 623-8888 (303) 623-9999