If you own the network it's not super hard to just filter all traffic doing DNS. If you have a properly owned phone, you can probably run this over your phone h

If you own the network it's not super hard to just filter all traffic doing DNS. If you have a properly owned phone, you can probably run this over your phone hotspot and do the packet inspection that way. Then you can block all nintendo traffic, while still not having a "custom" DNS. If you really tried, you could still even have your custom DNS except it would be spoofing another server. The point is that if you own the network (and you do), then the clients are nominally at your mercy.