ASUS Router DNS Not Responding — What It Means & How to Fix It

What Does This Error Mean?

DNS Not Responding means your router cannot translate website names into addresses. You are connected to the router but websites will not load in any browser. Changing the DNS server or restarting the router usually fixes this quickly.

Affected Models

RT-AX88U
RT-AX86U
RT-AC88U
RT-AX58U
RT-AC68U

Common Causes

ISP DNS servers are down or experiencing outages
Router firmware bug causing DNS relay to stop working
Incorrect DNS server addresses configured in the router admin panel
Router overheating causing DNS relay service to crash
DNS cache corruption on the router or on your individual device

How to Fix It

Restart the ASUS router by unplugging it for 30 seconds, then plugging it back in.

A reboot clears temporary DNS relay failures and refreshes the ISP connection.
Open a browser and go to 192.168.1.1 to access the ASUS admin panel.

Default login is admin/admin unless you changed it — check the router label.
Go to WAN settings and change the DNS server to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

These public DNS servers bypass your ISP and are highly reliable.
Save the settings and restart the router again.

The new DNS settings take effect after the router reboots.
On your computer, open Command Prompt and run: ipconfig /flushdns

This clears the Windows DNS cache so your PC uses the new DNS server immediately.
Check the ASUS router firmware version and update it if an update is available.

Firmware updates often fix DNS relay bugs that cause persistent DNS failures.

When to Call a Professional

Contact your ISP if changing DNS servers does not restore browsing. Your ISP can confirm if their DNS infrastructure is down or if there is a line fault. This is rarely a hardware failure — most DNS issues resolve with settings changes.

Frequently Asked Questions

Why am I connected to Wi-Fi but websites still will not load?

Being connected to Wi-Fi only means you reached the router — not the internet. DNS failure means the router cannot look up website addresses even with a live connection. Changing to a public DNS like 8.8.8.8 usually restores browsing immediately.

What is the best DNS server to use on an ASUS router?

Google DNS (8.8.8.8 and 8.8.4.4) and Cloudflare DNS (1.1.1.1 and 1.0.0.1) are the most reliable free options. Both are faster and more reliable than most ISP DNS servers. Cloudflare also has a privacy-focused option that does not log queries.

Will changing DNS on the router affect all devices in my home?

Yes — changing DNS in the ASUS router admin panel applies to every device on your network. You do not need to change DNS on each phone, TV, or computer individually. This is the fastest way to fix DNS issues for the whole household.