Two resolvers on the same anycast addresses worldwide. One answers everything; the other refuses ads, trackers and known malware. Both speak plain DNS, DNS over HTTPS, DNS over TLS and DNS over QUIC, and neither keeps a log of what you asked.

Nothing that says who asked for what. The resolvers keep no per-query log at all — not the name, not your address, not a hash of either. Aggregate counters exist (how many queries a node answered, how many were filtered) and they are not attributable to anyone. There is no account, nothing to sign in to, and nothing to sell.

A network gets 500 queries per second per node, counted per /24 or per /64 rather than per address, and the allowance refills continuously. Going over it does not block anything: address lookups are answered with a page that says what happened, and everything else gets an empty answer so mail and service lookups fail cleanly rather than being pointed at a web server. A normal household or office never comes close.