Prefix Information
The prefix 340 is part of area code 601 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (601-340-0000 through 601-340-9999).
Phone numbers with prefix 340 in area code 601. Location: Jackson, Mississippi.
The prefix 340 is part of area code 601 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (601-340-0000 through 601-340-9999).