Home Router settings Setting Up ADnull DNS on Mercusys MW301R Router

Setting Up ADnull DNS on Mercusys MW301R Router

Last updated on Mar 16, 2026

ADnull DNS addresses

Primary DNS 188.190.191.78

Secondary DNS 188.190.191.52


Step 1. Log in to the router web interface

Open a browser and go to:

http://192.168.0.1

or

http://192.168.1.1

Enter your login and password. If you have not changed them, check the label on the bottom of the router.


Step 2. Open advanced WAN settings

Navigate to:

Advanced → WAN Settings


Step 3. Specify DNS manually

Find the option Specify DNS manually and enable it. Enter:

  • Primary DNS: 188.190.191.78

  • Secondary DNS: 188.190.191.52

Click Save.


Done!

ADnull DNS is now active. All devices on your network are protected — ads and trackers are blocked automatically.


FAQ

DNS was not applied after saving

Restart the router and reconnect your devices to Wi-Fi.

Where do I find the router password?

Check the label on the bottom of the router — it shows the login address, username, and default password.