Is it secure to use Pi-Hole as public DNS server?

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1

I know that public DNS servers with bad configuration can be used to perform DDNS attacks.
So is it secure to open Pi-Hole to public or do we need some extra security layer?

2

These Reddit posts have some helpful information:

Otherwise, the most secure way to have a public Pi-hole is to only access it via a VPN.
See here for information on that:

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