I’ve setup 188.8.131.52 for Families as my DNS for both IPV4, IPV6 in my router. It blocks adult and phishing sites.
However, when I use Firefox instead of Chrome/ Edge, I was able to access adult/ phishing sites. This was because I’ve had “Enable DNS over HTTPS” checked in Firefox and selected Cloudflare (default). Only when I set it t custom and added https://family.cloudflare-dns.com/dns-query to the DoH, Firefox started blocking.
Thereby, even if the router configuration is set to 184.108.40.206 for Families, one can easily bypass it using Firefox DoH something other than 220.127.116.11 for Families.