I have no proof for this except my memories. Perhaps we could find some links somewhere, but that would change nothing: it doesn’t work today. My guess that maybe it was different for different markets / locations. As I clearly remember a friend learned about Pi-Hole and bought an SBC just to deploy Pi-Hole. I’d been having it censoring the ads for my entire family, till it stopped doing that at some point. I still have that Pi-Hole deployed by the way, it continues blocking trackers and other shitty things online.

I wonder why browser extensions still work, while network-wide ad blocker does not.