The fact that in the past 30 days, *.doubleclick.net was tried to be accessed 109,496 times, *.LGSmartAd.com 71,081 times, *.GStatic.com 65,466 times, and app-measurement.com 17,539 times, speaks volumes about the amount of ads our devices gobble up each day. When I look at DNS stats and zoom into these I'm a bit shocked to see it, because these all happen during the background too, like the TV trying to push the Smart AD domain. Then there's device-metrics-us.amazon.com, somethinng my echos tried to reach 13,620 times, a relatively low number, but they appear to ping home every half hour without your knowledge, just silently. I've become hyper-aware of the traffic flowing in and out of my network now, and this is why using a 3rd-party DNS (or rolling your own, if you're into that sort of thing) is super crucial.