I was reading this fascinating answer and was puzzled by the fact that every time I entered the neverssl.com webpage it redirects me to a seemingly random subdomain. For example, the landing page is always something like http://bcdfhkmlnvtxwrzs.neverssl.com/online
. I also noticed that the redirect is done using javascript, since when I disable it stopped working.
So I am wondering how does redirecting to a random subdomain helps an user gets redirected to a captive portal, which is the only purpose of the website.