Prefix Information

The prefix 303 is part of area code 314 serving St. Louis, Missouri.

This exchange contains 10,000 possible phone numbers (314-303-0000 through 314-303-9999).

Browse Numbers in This Prefix

314-303-0000-0999 314-303-1000-1999 314-303-2000-2999 314-303-3000-3999 314-303-4000-4999 314-303-5000-5999 314-303-6000-6999 314-303-7000-7999 314-303-8000-8999 314-303-9000-9999

Sample Numbers

(314) 303-0000 (314) 303-1234 (314) 303-2000 (314) 303-3333 (314) 303-4444 (314) 303-5555 (314) 303-6000 (314) 303-7777 (314) 303-8888 (314) 303-9999