There's been several articles and HN posts about chromium's nxdomain/intranet detection feature and its impact on root DNS traffic that may give a hint. https:

There's been several articles and HN posts about chromium's nxdomain/intranet detection feature and its impact on root DNS traffic that may give a hint. https://news.ycombinator.com/item?id=24231857 https://news.ycombinator.com/item?id=24231857 https://news.ycombinator.com/item?id=24270369 https://news.ycombinator.com/item?id=24270369