Prefix Information
The prefix 400 is part of area code 601 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (601-400-0000 through 601-400-9999).
Phone numbers with prefix 400 in area code 601. Location: Jackson, Mississippi.
The prefix 400 is part of area code 601 serving Jackson, Mississippi.
This exchange contains 10,000 possible phone numbers (601-400-0000 through 601-400-9999).