https://www.dnsleaktest.com/

https://cleanbrowsing.org/help/docs/dnsoverhttps/

https://adguard-dns.io/en/public-dns.html

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome]
"DnsOverHttpsMode"="off"

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge]
"DnsOverHttpsMode"="off"

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\DNSOverHTTPS]
"Enabled"=dword:00000000
"Locked"=dword:00000001