Can’t load some websites? Check your DNS server settings Your ISP might have outdated or erratic servers causing problems between you and the rest of the internet.

8. Check DNS Settings This step will take a bit more effort, as you will need to locate the correct DNS settings via a network administrator or ISP.

Qualys also has a checker set up. You can head over there, and it’ll check for the DNS Changer Malware and any other issues you may want to get fixed on your computer.

However, DNS Benchmark doesn't test your ISP's DNS servers. In the screenshot above, for example, it actually says our router—that's the "Local Network Namesaver" is the fastest DNS server.

How to keep your ISP’s nose out of your browser history with encrypted DNS Using Cloudflare’s 1.1.1.1, other DNS services still require some command-line know-how.