Secure DNS improves response times by modifying the default ISP DNS to your choice of Public DNS resolvers or DNSFLEX Secure DNS. Use DNS Changer to select from a list of top rated public DNS providers including Google, Cloudflare, Quad9, Verisign and more. Add an additional layer of online security with DOH (DNS over HTTPS). DOH works by encrypting DNS queries between your UE device and the DNS server, protecting your data from third party networks such as public WiFi hotspots or ISPs.