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But with DoH you can’t sniff the DNS, that’s the whole point.
You actually still can. Have a look at DNS fingerprinting
But you can see the ip address, which will id the bank. They can derive other information by ip addresses or leaked data and there’s still things using unencrypted connections even today. I generally just connect to my home vpn so at least it’s inly my isp spying on me.
Generally you can also read the SNI.
I think this is one of the things that ech is meant to solve. But ech/esni is still not widespread on smaller sites yet I think.