TCB13, 2 months ago (edited 2 months ago)

Because:

Quad9 blocks lookups of malicious host names from an up-to-the-minute list of threats. (…) If the system detects that the site you want to reach is known to be infected, you’ll automatically be blocked from entry – keeping your data and computer safe.

If you query their “unsecure” servers, it works:

<span style="color:#323232;">dig spy.pet "@9.9.9.10" +short
</span><span style="color:#323232;">104.26.1.165
</span><span style="color:#323232;">172.67.74.73
</span><span style="color:#323232;">104.26.0.165
</span>

I would never use a provider that has the means in place / likes to filter the DNS - you never know when a govt will ask them to kill a certain domain (even for the “unsecure” servers) or redirect things.