Here’s how to block ads using DNS.
Using adguard DNS you can block ads by adding it to your VPN application.
On your VPN app setting you will see the custom DNS or Primary / Secondary DNS, when you saw it copy this DNS and paste it to primary dns (dns1) and secondary dns (dns2)
dns1- 94.140.14.14
dns2- 94.140.15.15
when you done click the save or okay the run your VPN and enjoy
note:
adguard dns can’t block p*rn ads based on my experience
Blocking Ads using DNS + VPN