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Alexis-D/DNS ad blocking on Android.md

Last active January 5, 2020 14:06
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DNS ad blocking on Android
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DNS ad blocking on Android.md

This took a bit of trial and error so documenting in the hope this helps someone.

Since Android P it possible to use a Private DNS which means we can now use an ad blocking DNS server without needing to use a VPN or root our Android devices. The only 'issue' is that this requires DNS-over-TLS which seems quite nascent at the time (Aug 2018). Fortunately for us blahdns offers a DNS-over-TLS ad blocking DNS server.

To configure this:

  1. Settings > Network & Internet > Advanced > Private DNS > Private DNS provider hostname: blah.de.blahdns.com
  2. (this step may or may not be needed) Chrome seems to use its own DNS resolver rather than the system one, so head to chrome://flags/#enable-async-dns, disable the option, and restart Chrome. If you want you can also head to chrome://net-internals/#dns and click Clear host cache to flush whatever DNS entries were cached already.
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