So I'm on BT, and like most people I've replaced the terrible "home hub" with a simple 4 router solution, 5G backbone to distribute wired around the house, single 2.4G AP for non-wired devices, OSPF to manage it all.
It's connected upstream to the VDSL via a pppoe (username email@example.com, no password), and the central DNS proxy uses either 18.104.22.168 or 22.214.171.124 upstream.
I've spent the morning scientifically browsing lots of porn sites, and haven't found a single one blocked. A google search for "porn" reveals the following sites on the first attempt, all work just fine.
The search also brings up the following site
Which is blocked as being morally unwelcome in my house.
What am I doing wrong?