Prefix Information

The prefix 420 is part of area code 636 serving OFallon, Missouri.

This exchange contains 10,000 possible phone numbers (636-420-0000 through 636-420-9999).

Browse Numbers in This Prefix

636-420-0000-0999 636-420-1000-1999 636-420-2000-2999 636-420-3000-3999 636-420-4000-4999 636-420-5000-5999 636-420-6000-6999 636-420-7000-7999 636-420-8000-8999 636-420-9000-9999

Sample Numbers

(636) 420-0000 (636) 420-1234 (636) 420-2000 (636) 420-3333 (636) 420-4444 (636) 420-5555 (636) 420-6000 (636) 420-7777 (636) 420-8888 (636) 420-9999