OpenDNS

OpenDNS is the leading provider of security and infrastructure services that make the Internet safer through integrated Web content filtering, anti-phishing and DNS.

Free Personal Web

Google Public DNS

Google Public DNS is a free, global Domain Name System (DNS) resolution service, that you can use as an alternative to your current DNS provider.

Free Web

DNSCrypt

DNSCrypt is a protocol that authenticates communications between a DNS client and a DNS resolver. It prevents DNS spoofing.

Free Open Source Mac OS X Windows Linux Android iPhone Docker

WebTitan DNS Web Filter

WebTitan is a powerful web filter providing protection from web based security threats and advanced web and dns filtering control to businesses around the world.

Commercial

Quad9

Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high-performance, and privacy.

Free Web

CheckDNSserver.com

Retrieve and review all DNS records for any domain name. Load an in-depth DNS report detailing IP, SOA, NS, MX records and more...

Free Web

CleanBrowsing

CleanBrowsing is a family and kid-safe way to browse the web without surprises. It Automatically blocks adult content, while still allowing Google, Youtube, Bing and the...

Free Windows Linux iPhone Chrome OS Web