Prefix Information
The prefix 400 is part of area code 504 serving New Orleans, Louisiana.
This exchange contains 10,000 possible phone numbers (504-400-0000 through 504-400-9999).
Phone numbers with prefix 400 in area code 504. Location: New Orleans, Louisiana.
The prefix 400 is part of area code 504 serving New Orleans, Louisiana.
This exchange contains 10,000 possible phone numbers (504-400-0000 through 504-400-9999).