I tried the following Python code:
urlopen('https://bagr.byethost6.com').read()
By the way, I do not know Python, this is just a line in a tutorial, so I do not know exactly what urlopen does. It returned the response from OP's post.
I also tried plain curl:
$ curl https://bagr.byethost6.com
which gave me a 403 http response.
Elsewhere on this forum there was something about javascript challenge on request, which would explain the behavior, but I cannot find it officially mentioned and documented anywhere.
There are no scripts on the page itself, it is just plain HTML.