AdGuard使うときみんなDNSは何使ってんのか気になってとりあえずGitHubにレポーティングしてるやつらだけ集計してみた
System Default、Cloudflare DNS、AdGuard DNSの三強か
Google DNSが思った以上に少なかった

2243 [System Default]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+System%22

1131 [Cloudflare DNS]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdns.cloudflare.com%2Fdns-query%22

809 [AdGuard DNS]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdns.adguard-dns.com%2Fdns-query%22

471 [Cloudflare DNS (Security)]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fsecurity.cloudflare-dns.com%2Fdns-query%22

236 [Google DNS]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdns.google%2Fdns-query%22

108 [Quad9]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdns9.quad9.net%3A443%2Fdns-query%22

94 [AdGuard DNS (Unfiltered)]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Funfiltered.adguard-dns.com%2Fdns-query%22

66 [OpenDNS]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdoh.opendns.com%2Fdns-query%22

40 [AdGuard DNS (Family)]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Ffamily.adguard-dns.com%2Fdns-query%22

27 [Cloudflare DNS (Family)]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Ffamily.cloudflare-dns.com%2Fdns-query%22

3 [OpenDNS (Family)]
https://github.com/AdguardTeam/AdguardFilters/issues?q=%22DNS+filtering%3A+server%3A+https%3A%2F%2Fdoh.familyshield.opendns.com%2Fdns-query%22