I use pihole extensively for blocking advertisements in my home network as well as on my servers. It’s a very easy to use tool which also gives you basic analytics. Pihole is no rocket science – it’s just a bunch of great utilities packaged together. A few weeks back I was lurking around trying to see if I can quickly deploy it on my servers using puppet instead of the manual way. Finally I found that there’s a docker image available for pihole and then I quickly wrote a puppet wrapper around it. Originally pi-hole was made for using raspberry pi as a DNS blocker but since then the project has moved ahead quite a lot. You can read up more about it here https://pi-hole.net/