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Wouldn't that loophole work on all DNS-based blockers/black-holes on any platform, namely Pi-hole (and the hosts file for that matter)?

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Yes. I use a DNSBL in my router (pfBlockerNG), and I've been considering writing a small script to resolve every IP in the blocklist and then block outgoing connections to those IPs.

Of course this is only useful at home. As soon as my phone leaves the house, everything is open again.

Ooh, good idea. Would probably only have to write ~1 time per day to a separate, parallel list. Or have a small VPS do the work continuously and push changes to a Git repo so others can pull it however often they want.

I’d love to take a look if you end up doing that!

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