Prefix Information
The prefix 503 is part of area code 660 serving Sedalia, Missouri.
This exchange contains 10,000 possible phone numbers (660-503-0000 through 660-503-9999).
Phone numbers with prefix 503 in area code 660. Location: Sedalia, Missouri.
The prefix 503 is part of area code 660 serving Sedalia, Missouri.
This exchange contains 10,000 possible phone numbers (660-503-0000 through 660-503-9999).