Based in Switzerland. Supports: DNS-over-TLS (DoT), DNS-over-HTTPS (DoH) and DNSCrypt.
Official website quad9.net
Our take
A Swiss-based resolver that blocks known-malicious domains by default and speaks DoT, DoH, and DNSCrypt, which is a sensible privacy-and-safety combination for most people. The honest caveat with any public resolver is that you are moving trust from your ISP to them, so this is only as good as Quad9’s stated no-logging policy. A strong, low-effort default for households; power users who want to see and tune everything will prefer running their own.
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Quad9 alternatives
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Pi-hole You can run Pi-hole in a container, or deploy it directly to a supported operating system via installer.