Chrome, Firefox, IE, could all check your IP against that list, and inform you, "Looks like you have an unsecured device which is attacking the internet, and slowing down your connection. Here's a site that can help you fix the problem..."
Having google or facebook check REMOTE_ADDR for every client would work though, but most people wouldn't understand what the notification means. Plus, on a network that isn't using nat you'd never get the alert since the IoT device itself would never be REMOTE_ADDR.