Provider Primary Secondary Cloudflare IPv4 1.1.1.1 1.0.0.1 Cloudflare IPv6 2606:4700:4700::1111 2606:4700:4700::1001 Google IPv4 8.8.8.8 8.8.4.4 Google IPv6 2001:4860:4860::8888 2001:4860:4860::8844 Quad9 * IPv4 9.9.9.9 9.9.9.10 Quad9 * IPv6 2620:fe::fe 2620:fe::10 OpenDNS (Cisco) IPv4 208.67.222.222 208.67.222.220 OpenDNS (Cisco) IPv6 2620:0:ccc::2 2620:0:ccd::2 Hurricane Electric IPv4 74.82.42.42 - Hurricane Electric IPv6 2001:470:20::2 - Chaos Computer Club Berlin 213.73.91.35 - Quad9 Primary: Secure, Blocklist, DNSSEC, No EDNS Client-Subnet Secondary: Unsecure, No blocklist, no DNSSEC, send EDNS Client-Subnet FoeBud/digitalcourage