Mullvad has operated public encrypted DNS (DoH) servers since 2022. They are unnecessary when using Mullvad VPN — traffic is already encrypted and Mullvad VPN's internal DNS handles all queries.
There’s nothing wrong with quad9. They’re a good privacy dns that blocks phishing and malware. Adguard dns though, also blocks ads and tracking so I would recommend that as well
There’s nothing wrong with quad9. They’re a good privacy dns that blocks phishing and malware. Adguard dns though, also blocks ads and tracking so I would recommend that as well