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I will grant that a hosts file or a local DNS server is faster than a 3rd-party DNS, assuming I have the site in my cache already. But if I visit a new site, I'm going to have to look it up somewhere, and the DNS server that my local DNS server contacts could have the exact same cache poisoning problem.

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Nope. (Granted, this is possible if the domain name resgitrant designates an open resolver as authoritative but almost no one does that. The reasons should be obvious.)

How much time have you devoted to learning how DNS works?

Not much. My main question is: how is the DNS server that my DNS server asks for an address, different from the DNS server that my DNS client asks for an address?

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