Strange entries in query log

Please accept my apology if I'm an violating any forum protocol. Wasn't sure how to ask for input as this is my first post.VAnyway has anyone experienced strangely formatted entries in the Query Log? They aren't in the (domain.xxx) format & ive included a screenshot of a partial list. The queries come from Android Pie device. I attempted blacklisting a few but there way to many individually & the letters change quite often. They appear in the log in the format: "avxjnhyravbgh" (never with a .com/.org/.edu/.) There are quite a few varying listings in the log. Do I need to include contents from a log file? Again I'm truly sorry if I broke protocol or duplicated an existing topic; I did a search 1st.
Thanks so much for any input.
-Dan

Piholeblockhelp

These strange looking domains are known e.g. for Google Chrome updates. In that case nothing to worry about.

Awesome! Okay thanks much for the quick assist! :+1::+1:

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