You can have your own DNS server, and you probably should ...
I'm running PiHole at home for ad-blocking, and I'm using Cloudflare as the upstream server. PiHole have a description here of how to add Unbound to the system as a recursive DNS resolver, with the ...
There's nothing more annoying than seeing ads all over the web page you're reading. Not only are they irrelevant to the content of the page, but they're also intrusive and sometimes get in the way of ...