Before buying a used car, prospective buyers can review vehicle histories in most states of Australia through a service such as the NSW Roads & Traffic Authority’s Vehicle History Check. The histories include information about how many owners the vehicle has had, whether it has been written off or stolen and other information that helps consumers understand the risks of purchasing the car. Now that new IPv4 addresses are history, there is a developing market for acquiring ‘used’ IPv4 addresses. And like used cars, there are risks involved in acquiring these used addresses. So, where is the Vehicle History Check for IPv4 addresses?