Prefix Information
The prefix 400 is part of area code 573 serving Columbia, Missouri.
This exchange contains 10,000 possible phone numbers (573-400-0000 through 573-400-9999).
Phone numbers with prefix 400 in area code 573. Location: Columbia, Missouri.
The prefix 400 is part of area code 573 serving Columbia, Missouri.
This exchange contains 10,000 possible phone numbers (573-400-0000 through 573-400-9999).