Prefix Information
The prefix 340 is part of area code 725 serving Las Vegas, Nevada.
This exchange contains 10,000 possible phone numbers (725-340-0000 through 725-340-9999).
Phone numbers with prefix 340 in area code 725. Location: Las Vegas, Nevada.
The prefix 340 is part of area code 725 serving Las Vegas, Nevada.
This exchange contains 10,000 possible phone numbers (725-340-0000 through 725-340-9999).