Prefix Information
The prefix 340 is part of area code 512 serving Austin, Texas.
This exchange contains 10,000 possible phone numbers (512-340-0000 through 512-340-9999).
Phone numbers with prefix 340 in area code 512. Location: Austin, Texas.
The prefix 340 is part of area code 512 serving Austin, Texas.
This exchange contains 10,000 possible phone numbers (512-340-0000 through 512-340-9999).