One of the agent's replies indicates that scanning DN42 was part of "a broader operation" that the author speculates to be about scanning "darknets" in general.

Combine that with the operator's rather obvious lack of understanding of what DN42 is revealed at the end, and you get the bigger picture.

I am almost sure the operator prompted an agent about "a list of darknets/deepweb" and DN42 just end-up in the list.