Prefix Information
The prefix 387 is part of area code 636 serving OFallon, Missouri.
This exchange contains 10,000 possible phone numbers (636-387-0000 through 636-387-9999).
Phone numbers with prefix 387 in area code 636. Location: OFallon, Missouri.
The prefix 387 is part of area code 636 serving OFallon, Missouri.
This exchange contains 10,000 possible phone numbers (636-387-0000 through 636-387-9999).