Prefix Information
The prefix 340 is part of area code 843 serving Charleston, South Carolina.
This exchange contains 10,000 possible phone numbers (843-340-0000 through 843-340-9999).
Phone numbers with prefix 340 in area code 843. Location: Charleston, South Carolina.
The prefix 340 is part of area code 843 serving Charleston, South Carolina.
This exchange contains 10,000 possible phone numbers (843-340-0000 through 843-340-9999).