Prefix Information
The prefix 399 is part of area code 917 serving New York City, New York.
This exchange contains 10,000 possible phone numbers (917-399-0000 through 917-399-9999).
Phone numbers with prefix 399 in area code 917. Location: New York City, New York.
The prefix 399 is part of area code 917 serving New York City, New York.
This exchange contains 10,000 possible phone numbers (917-399-0000 through 917-399-9999).