Contents
In short
A protective DNS service is a simple additional layer against known phishing and malware domains. It does not replace checking messages yourself.
What is it?
DNS translates names like example.com into technical addresses. A protective DNS service knows lists of harmful domains and refuses to resolve them.
Who is it useful for?
Households that want an extra protective layer for all devices, including families.
What does it protect against?
- Visiting known phishing and malware domains
- Partly tracking and ad domains, depending on the service
What does it not protect against?
- New, still unknown sites
- Attacks via files that are already open
- Devices that force their own DNS service
What you can do for free
- 01Enter a protective DNS service in your router for all devices
- 02Use 'Private DNS' on Android or profiles on iOS
- 03Check the browser setting for secure DNS
When is an extra product worth it?
Paid versions often add category filters and reports – for example for families with children.
What to check when choosing
- Privacy statements and logging
- Encrypted transport (DoH/DoT)
- Transparent block lists
We deliberately name no products and publish no rankings.
Common mistakes
- Treating DNS protection as complete phishing protection
- Choosing a service without clear privacy statements
Checklist
- Protective DNS set in router or device
- Service privacy terms read
- Other basics stay on
Frequently asked questions
Will my internet get slower?
Usually not noticeably.
Does the DNS provider see which sites I visit?
It sees the requested domain names, which is why its privacy terms matter.
Sources
Checked on 6 Oct 2026.