How do I find out who or what is downloading an older version of my npm module? [closed]

Why is an old version of my npm module suddenly getting 274k downloads a week?

download stats

Its not to clear to me why an old version of my module is generating so many downloads. I have tried searching on github and looking at the dependents, but I see no popular modules or projects that are referencing "search-index": "1.0.6". I can’t seem to find any npm dependents that generate a lot of downloads either.

So where are these downloads coming from? What other options do I have to find out?