https://quad9.net/service/service-addresses-and-features/
Secured w/ECS: Malware blocking, DNSSEC Validation, ECS enabled IPv4 9.9.9.11 149.112.112.11 IPv6 2620:fe::11 2620:fe::fe:11 HTTPS https://dns11.quad9.net/dns-query TLS tls://dns11.quad9.net