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How to set up OpenDNS or Google DNS on your router

Setting DNS once on the router is the best fix for whole-home “down for me” issues.

Why set DNS on the router?

Every device that gets DHCP from the router inherits the new resolvers, no per-device setup.

Recommended public DNS servers

  • OpenDNS (Cisco): 208.67.222.222 / 208.67.220.220
  • Google Public DNS: 8.8.8.8 / 8.8.4.4
  • Cloudflare DNS: 1.1.1.1 / 1.0.0.1

Generic router steps

  1. Find the router admin URL (often 192.168.0.1, 192.168.1.1, or http://router.local) and log in with the admin password (check the sticker).
  2. Locate Internet, WAN, or DHCP Server settings, look for DNS, DNS 1, Primary DNS, or similar.
  3. Replace ISP DNS with OpenDNS 208.67.222.222 / 208.67.220.220 or Google 8.8.8.8 / 8.8.4.4.
  4. Save / Apply. Reboot the router if prompted.
  5. Renew DHCP on your devices (toggle airplane mode or run ipconfig /renew on Windows).
  6. Brand menus differ (TP-Link, Netgear, Fritz!Box, Orange/Livebox, etc.); search your model + “DNS” if the labels differ.

After changing router DNS

Flush caches on PCs so they stop using old answers.

  1. On Windows run ipconfig /flushdns.
  2. On macOS flush mDNSResponder as in the macOS guide.
  3. Reboot smart TVs and game consoles if they still fail.

Verify it worked

Check a previously failing site from two devices. If only one still fails, fix that device’s manual DNS or browser cache.

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