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They don't need to be doing DNS proxying, they can just inspect port 53 traffic -- unless the site you're visiting supports DNS over TLS, then you're not hiding
by Johnny555 9y ago
They don't need to be doing DNS proxying, they can just inspect port 53 traffic -- unless the site you're visiting supports DNS over TLS, then you're not hiding anything from your ISP, since they'll see the DNS query packet hitting the www.porn-site.com nameserver.
However, if have a local TLS nameserver, you can set it up to query 1.1.1.1 over TLS, then your ISP can't see any of your DNS queries.
So you need to decide who you trust more -- your ISP or a DNS provider (or a VPN provider).