OpenDNS - OpenDNS provides faster and safer Internet access for your home or Business.
1.1.1.1 - The free app that makes your Internet safer.
Comodo Secure DNS - Comodo Secure DNS is the leading DNS provider. We offer Managed DNS, Enterprise DNS, Authoritative, Anycast and CDN DNS hosting.
CleanBrowsing - CleanBrowsing is a family and kid-safe way to browse the web without surprises.
Quad9 - Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high-performance, and privacy.
Level3 DNS - Level3 DNS is one of the fastest DNS servers that provide you with the best performance while browsing the internet.