Prefix Information
The prefix 340 is part of area code 769 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (769-340-0000 through 769-340-9999).
Phone numbers with prefix 340 in area code 769. Location: Jackson, Mississippi.
The prefix 340 is part of area code 769 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (769-340-0000 through 769-340-9999).