01
Browser (Firefox)
Settings → Privacy & Security → DNS over HTTPS → Custom, then paste the URL below.
dns.turtlerequests.com/dns-query
02
Browser (Chrome)
Settings → Privacy → Security → Use secure DNS → Custom, paste the full URL.
https://dns.turtlerequests.com/dns-query
03
Windows 11
Settings → Network → DNS → Encrypted preferred, paste the DoH server URL.
https://dns.turtlerequests.com/dns-query
04
iOS / macOS
Use a DNS profile or app like DNSecure to add a DoH resolver with the URL.
https://dns.turtlerequests.com/dns-query