Any idea how to block domain's globally on android?

[attempty]

RethinkDNS is the best app for that:

What are your opinions on RethinkDNS?

I am currently using Netguard on android. But recently Dev announced that the app is going to be removed from playstore and he is considering discontinue the project. I recently come across RethinkDNS app on fdroid and users can set other DNS too and can also block internet access to specific apps like Netguard. I haven’t heard about the app before, so I am asking for others advice and opinions on the app.

Though it takes up the VPN slot.