'My system talks to "example.org" -- how to find the process behind it [closed]

my pihole indicates, that my Linux PC (Debian 11 GNU/Linux) is actually talking to example.org (A and AAAA request). I have nothing fancy installed (Firefox, Thunderbird, nginx, Visual Code, etc.). I suspect that this is some kind of "internet ping". How can I find the actual process initiating this request? Any hint is greatly appreciated. Thanks.

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linuxdnspihole


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