Prefix Information

The prefix 640 is part of area code 314 serving St. Louis, Missouri.

This exchange contains 10,000 possible phone numbers (314-640-0000 through 314-640-9999).

Browse Numbers in This Prefix

314-640-0000-0999 314-640-1000-1999 314-640-2000-2999 314-640-3000-3999 314-640-4000-4999 314-640-5000-5999 314-640-6000-6999 314-640-7000-7999 314-640-8000-8999 314-640-9000-9999

Sample Numbers

(314) 640-0000 (314) 640-1234 (314) 640-2000 (314) 640-3333 (314) 640-4444 (314) 640-5555 (314) 640-6000 (314) 640-7777 (314) 640-8888 (314) 640-9999