Configure le_dns on Your Router

Protect every device on your network at once

Changing DNS on your router is the most powerful option: every device on your network — phones, laptops, smart TVs, IoT gadgets, guest devices — automatically uses le_dns without any per-device configuration.

Before you start

You need access to your router’s admin interface. Typically:

• Open a browser and go to http://192.168.1.1 or http://192.168.0.1
• Log in with your admin credentials (often printed on the router’s label)

Generic steps (applies to most routers)

1. Log into your router admin panel
2. Find DNS settings — usually under one of:
   • WAN / Internet settings
   • DHCP settings (for distributing DNS to local devices)
   • Advanced → DNS
3. Replace the existing DNS addresses with:
   • Primary DNS: 51.75.96.82
   • Secondary DNS: 51.89.95.33
   • Tertiary DNS (if supported): 151.115.80.165
4. Save and apply

Fritz!Box

1. Open Internet → Account Information → DNS rebind protection (optional, can stay enabled)
2. Go to Internet → DNS
3. Select Use other DNSv4 servers
4. Set Preferred DNSv4 server: 51.75.96.82
5. Set Alternative DNSv4 server: 51.89.95.33
6. Click Apply

Livebox (Orange)

1. Go to Configuration avancée → Réseau → DNS
2. Replace the ISP DNS entries with:
   • 51.75.96.82
   • 51.89.95.33
3. Save

Other ISP boxes (SFR, Bouygues, Freebox)

Freebox: Freebox OS → Paramètres de la Freebox → DHCP → DNS

Most ISP boxes have DNS settings under:

• Advanced settings → DNS
• DHCP configuration → DNS servers
• Network → LAN → DNS

A note on encryption

Router-level DNS changes DNS to le_dns, which prevents your ISP from intercepting your queries. However, the connection from your router to le_dns is plain DNS (UDP/TCP port 53) — not encrypted in transit.

For end-to-end encryption, configure DoH or DoT on each device individually. See the DoH setup guide or use the Private DNS setting on Android or a DNS profile on iOS.

Verify it works

From any device on the network, visit dnsleaktest.com. The DNS servers listed should be le_dns. If your ISP’s servers still appear, check that DHCP is distributing the new DNS (you may need to reconnect devices or flush their local DNS cache).