Choosing the Public DNS Server

https://www.grc.com/dns/benchmark.htm

https://github.com/google/namebench

https://developers.google.com/speed/public-dns/

https://www.opendns.com/setupguide/

https://public-dns.info/

https://gcore.com/public-dns

https://dnschecker.org/

https://1.1.1.1/dns/

https://www.dnsperf.com/#!dns-resolvers

https://dnsmap.io/articles/most-popular-dns-servers

https://www.quad9.net/

https://en.wikipedia.org/wiki/Public_recursive_name_server

https://www.restena.lu/en/document/190-configuring-your-server-public-dns-resolver

https://dnsprivacy.org/public_resolvers/

https://www.networkegypt.com.eg/free-public-dns/

https://www.allconnect.com/blog/best-free-dns-servers