How is hostinger.ru related to boxhost.me and 5jelly.com?

Question

Server equipment

Why is the first time after registering on boxhost.me or 5jelly.com with a 404 error on the hosting, the hostinger.ru error page is displayed?
Or, for example, when you want to create hosting, if hosting with your domain is already registered on the hostinger.ru website, then you cannot create hosting with the same domain on boxhost.me or 5jelly.com, even if ns records are already redirected to them.

How is hostinger.ru connected with boxhost.me and 5jelly.com (maybe it's because they have the same cPanel)?

Answer 1

I once had an acquaintance with a hosting provider, I made a site for a friend, a couple of static pages.
A friend of mine had financial problems at the time, he didn't have his own server back then.
After registration, during which I received 4 times a 500 error, I swore never again, even if they start to cry ...