So you're sending ALL your internet traffic through a VPN, that you know nothing about? Sounds like the craziest idea I've ever heard.
Who owns the VPN? What are they doing with your data?
replies(4):
Who owns the VPN? What are they doing with your data?
You create a virtual "VPN" that filters out traffic based on hostnames. DNS requests that are not on the blacklist get forwarded to your DNS of choice.
Other adblockers for non-rooted Android (like NetGuard) work in the same way.