Prefix Information

The prefix 340 is part of area code 636 serving OFallon, Missouri.

This exchange contains 10,000 possible phone numbers (636-340-0000 through 636-340-9999).

Browse Numbers in This Prefix

636-340-0000-0999 636-340-1000-1999 636-340-2000-2999 636-340-3000-3999 636-340-4000-4999 636-340-5000-5999 636-340-6000-6999 636-340-7000-7999 636-340-8000-8999 636-340-9000-9999

Sample Numbers

(636) 340-0000 (636) 340-1234 (636) 340-2000 (636) 340-3333 (636) 340-4444 (636) 340-5555 (636) 340-6000 (636) 340-7777 (636) 340-8888 (636) 340-9999