Hello! I recently tried NextDNS and noticed that is detects my current DNS resolved on the go. I just opened its website and it immediately showed my current resolver: When I tried changing private DNS to Cloudflatein settings it instantly showed my new resolver. But how exactly it works? Does the browser send used DNS server to website? Or it is done somehow via JavaScript? And also: So every website can know what I am using now? Can it be used for fingerprinting?