DNS import from hosts file

Hi and thank you Univention for an excellent product. I apologize if this question has been asked before, but my searching didn’t find an answer.

I am running the following:
UCS Version
4.3-3 errata456 (Neustadt)
UMC Version
10.0.6-19A~4.3.0.201902141741

I am utilizing the DNS service on it.

I would like to import about 20k dns entries into it. I currently have them in a linux hosts file.

Is there an easy way to do this?

Alternatively, what I am really doing is a DNS blacklist. Is there a plugin/feature/solution? to do this?

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