Prefix Information
The prefix 399 is part of area code 401 serving Providence, Rhode Island.
This exchange contains 10,000 possible phone numbers (401-399-0000 through 401-399-9999).
Phone numbers with prefix 399 in area code 401. Location: Providence, Rhode Island.
The prefix 399 is part of area code 401 serving Providence, Rhode Island.
This exchange contains 10,000 possible phone numbers (401-399-0000 through 401-399-9999).