Cloudflare DNS 1.1.1.1: How to Set It Up on Windows, Android and Routers
Cloudflare 1.1.1.1 is a public recursive DNS service. Its standard IPv4 resolver addresses are 1.1.1.1 and 1.0.0.1.
Cloudflare also supports IPv6, encrypted DNS and separate family-filtering profiles.
Verify DNS resolution after configuring Cloudflare.
How to Configure 1.1.1.1
On Windows 11, edit the DNS server assignment for the active Wi-Fi or Ethernet adapter. On Android, a compatible Private DNS hostname can use DNS over TLS. On a router, change the upstream DNS fields without altering the LAN gateway or subnet.
Step-by-Step Process
- Record the existing DNS configuration.
- Open device or router DNS settings.
- Enter 1.1.1.1 as preferred DNS.
- Enter 1.0.0.1 as alternate DNS.
- Enable the correct encrypted DNS mode when desired.
- Save and reconnect.
- Test with nslookup example.com 1.1.1.1.
Important Concepts
Standard IPv4
1.1.1.1 and 1.0.0.1.
Standard IPv6
2606:4700:4700::1111 and 2606:4700:4700::1001.
Private DNS
Android can use a provider hostname for DNS over TLS.
Families profiles
Cloudflare publishes separate addresses for malware and adult-content filtering.
Common Problems and Mistakes
- External DNS blocked by the network
- VPN overriding DNS
- Captive portal failing with static DNS
- Security software intercepting DoH or DoT
- Wrong family-filtering profile
- Business network requiring internal DNS
Troubleshooting Checklist
- Use official current addresses.
- Save previous settings.
- Verify IPv4 and IPv6.
- Test unencrypted and encrypted modes separately.
- Check whether a VPN changes the result.
Frequently Asked Questions
Is 1.1.1.1 free?
The standard public resolver is available without a direct fee for ordinary use.
Does it hide all browsing from the ISP?
Encrypted DNS hides query contents from simple observation, but destination connections and other metadata may still be visible.
Is Cloudflare always fastest?
No. Performance depends on local routing and network conditions.
Conclusion
Cloudflare DNS 1.1.1.1 is an important topic for anyone managing websites, networks or online services. Use the diagnostic steps above to separate local-device, resolver, authoritative DNS and application problems.