Your internet connection probably comes with a DNS resolver already. Your ISP picks it for you, most people never think about changing it. Fair enough, DNS quietly does its job in the background.
But there’s a reason to swap that default for 1.1.1.1. Cloudflare runs it as a public resolver built around speed and privacy, free to use.
Your ISP Isn’t the Only Option
DNS is basically the internet’s address book. Type a website name in, your device needs the IP address behind it, the resolver handles that lookup.
Your ISP usually handles this automatically, but that resolver isn’t some permanent part of your connection, you can change it. Matters because DNS requests can reveal which domains your device is looking up. Ordinary DNS typically sends those requests unencrypted, so anyone on the network path can potentially see them.
Privacy Is the Big Reason
Cloudflare says it doesn’t sell personal data from its resolver to advertisers, and that source IP addresses from DNS queries aren’t stored long-term, apart from limited sampled data used for troubleshooting and attack mitigation. Logs get deleted within 25 hours.
Pretty meaningful difference if you care who gets to see your DNS activity.
It Can Feel Quicker
Speed’s another reason people switch. DNS isn’t turning a slow broadband connection into a fast one, but the resolver affects how quickly a lookup gets answered, especially with cached info already available.
Cloudflare runs 1.1.1.1 across a large global network with regional caches, which helps cache hit rates and performance, and picks authoritative nameservers based on response time and reliability. A small improvement here is nice mainly because you stop noticing it, the browser just gets on with things.
Encrypted DNS Changes the Privacy Picture
Important detail, switching to 1.1.1.1 alone doesn’t automatically encrypt every lookup.
Stronger privacy comes from DNS over HTTPS or DNS over TLS, both encrypt the request between your device and the resolver, making it harder for anyone on the network path to read or tamper with it. If you’re switching, use encrypted DNS where your device or router supports it, it’s the better setup.
There’s One More Reason to Switch
You get more control. Your ISP’s resolver is just the default. With 1.1.1.1, you’re choosing a separate provider whose privacy policy and setup you can actually examine.
Free and easy to change, removes most of the hassle. Privacy’s the stronger argument, especially paired with encrypted DNS. Speed feels better when the resolver’s close to your network, though it depends where you are. No content filtering on the standard resolver either, useful if you don’t want DNS quietly deciding what gets blocked.