Prefix Information

The prefix 840 is part of area code 314 serving St. Louis, Missouri.

This exchange contains 10,000 possible phone numbers (314-840-0000 through 314-840-9999).

Browse Numbers in This Prefix

314-840-0000-0999 314-840-1000-1999 314-840-2000-2999 314-840-3000-3999 314-840-4000-4999 314-840-5000-5999 314-840-6000-6999 314-840-7000-7999 314-840-8000-8999 314-840-9000-9999

Sample Numbers

(314) 840-0000 (314) 840-1234 (314) 840-2000 (314) 840-3333 (314) 840-4444 (314) 840-5555 (314) 840-6000 (314) 840-7777 (314) 840-8888 (314) 840-9999