How to Set Up ADnull DNS on a Router
Why configure DNS on a router?
Configuring ADnull DNS directly on your router automatically protects all devices on your network: smartphones, TVs,
laptops, tablets, and Smart TVs — without configuring each device individually.
ADnull DNS addresses
Primary DNS 188.190.191.78
Secondary DNS 188.190.191.52
Approach 1 — DNS in WAN/Internet settings
This approach changes the DNS server that the router itself uses for name resolution. Most routers support this method.
General steps
1. Open a browser and enter your router's web interface address — usually http://192.168.0.1 or http://192.168.1.1
2. Enter your login and password (default is often admin / admin or printed on the router's label)
3. Find the WAN, Internet, or Connection section
4. Find the DNS field — switch it to Manual or Static mode
5. Enter:
- Primary DNS: 188.190.191.78
- Secondary DNS: 188.190.191.52
6. Click Save or Apply
Approach 2 — DNS in DHCP server settings
This approach configures the router to automatically distribute ADnull DNS to all connected devices via DHCP. Use this
if Approach 1 did not work or if DNS in WAN settings is unavailable.
General steps
1. Open a browser and go to your router's web interface — http://192.168.0.1 or http://192.168.1.1
2. Enter your login and password
3. Find the LAN, Local Network, or DHCP Server section
4. Find the DNS1 / DNS2 or Primary DNS / Secondary DNS fields
5. Enter:
- DNS1: 188.190.191.78
- DNS2: 188.190.191.52
6. Click Save
7. Reconnect your devices to Wi-Fi or restart the router for changes to take effect
Which approach to choose?
Router allows DNS change in internet settings
Approach 1 (WAN DNS)
DNS in WAN settings is missing or blocked by provider
Approach 2 (DHCP)
Maximum coverage — all devices
Both approaches
Where to find the router address and password?
Check the label on the bottom or back of the router — it usually shows:
- Web interface IP address
- Default login and password
FAQ
Do I need to configure DNS separately on each device?
No. Once configured on the router, all devices on the network automatically use ADnull DNS.
What if DNS is not working after saving?
Restart the router and reconnect your devices to Wi-Fi. On some devices you may need to toggle Wi-Fi off and on.
Can I enter only one DNS server?
Yes, but it is recommended to enter both — primary and secondary — for reliability.