Quad9 did not block any of those malicious domains. These domains were all blacklisted by Google Safe Browsing, some major antivirus engines and most of them on phishtank. On a list with 30 random known-malicious domains, OpenDNS blocked 3 of them (10% success rate) and Comodo blocked other 4 (~10% success rate). But I am trying to see how well they block access to malicious domains.Īll these providers do very little to block access to malicious content. I am not looking to test their performance.

Norton ConnectSafe (Malware, Phishing and Scam sites): 199.85.126.10.

I chose those popular (and free) services that are supposed to block access to malware, phishing and bad stuff in general: How good are they? Do they really improve the security of someone browsing the web? Are they worth the trouble? So today, I decide to test a few of the most popular filtered DNS resolvers that restrict access to malicious content. The level of complexity increases as you try to do more. Services like CleanBrowsing and Yandex, also remove pornography from the DNS responses. Quad9 and OpenDNS, on the other hand, filter out malicious content to help protect their users. Yes, they are both DNS resolvers, but Google’s goal is to provide an unfiltered DNS. I can not compare Google’s 8.8.8.8 against Quad9’s 9.9.9.9 or Norton ConnectSafe, as they do things very differently.

However, as some people pointed out, the results were not really fair. On a recent post, I tried to compare the performance of a few DNS resolvers.

Norton connectsafe vs opendns