How to change your DNS service on a Windows PC or Mac - and why you should

Switching to a different DNS provider than your ISP can offer faster performance and better security. Here how.

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ZDNET's key takeaways

• Changing your DNS can improve speed, security, and privacy across devices.
• You can switch DNS settings in Windows, MacOS, or directly on your router.
• Popular DNS options include Google, Cloudflare, OpenDNS, and Comodo.

The DNS, or Domain Name System, serves as a phone book for the internet, translating between IP addresses and domain names. By default, your home Windows PC or Mac uses whatever DNS server is set up by your internet provider. But you don't have to stick with that server.

Also: Why I always encrypt my web browsing - and the top free secure DNS services I trust

Why would you want to change it? Here are a few reasons ...