Prefix Information
The prefix 840 is part of area code 716 serving Buffalo, New York.
This exchange contains 10,000 possible phone numbers (716-840-0000 through 716-840-9999).
Phone numbers with prefix 840 in area code 716. Location: Buffalo, New York.
The prefix 840 is part of area code 716 serving Buffalo, New York.
This exchange contains 10,000 possible phone numbers (716-840-0000 through 716-840-9999).