This is used by Cloudflare DNS (1.1.1.1) and Quard9 (9.9.9.9).
$CertificateAvailable "DigiCert TLS Hybrid ECC SHA384 2020 CA1"
/ip dns set use-doh-server=https://1.1.1.1/dns-query verify-doh-cert=yes
$CertificateAvailable "DigiCert TLS Hybrid ECC SHA384 2020 CA1"
/ip dns set use-doh-server=https://9.9.9.9/dns-query verify-doh-cert=yes