Prefix Information
The prefix 400 is part of area code 646 serving New York City, New York.
This exchange contains 10,000 possible phone numbers (646-400-0000 through 646-400-9999).
Phone numbers with prefix 400 in area code 646. Location: New York City, New York.
The prefix 400 is part of area code 646 serving New York City, New York.
This exchange contains 10,000 possible phone numbers (646-400-0000 through 646-400-9999).