Site blocked on windows XP?

Question

Ping

The site was blocked on the parents' home computer (if it's important, it's artvid.ru). The most surprising thing is that it is in the computer , because. if you plug the LAN into another computer and connect using the same login and password, the site opens.
Because I don't know much about Windows, I found the following options:

1. system32/drivers/ets/hosts - but here is a bug, I cleaned everything - it hasn't changed
   
2. Antivirus - looked at the list - it's empty
   
3. Firewall - same as with antivirus
   

The site is not pinging (timeout exceeded), so I hope for your help.
upd. The DNS server returns the node's ip - 5.9.91.237
upd2. The site is available only to users of Tatarstan operators, so it will not open for you. The question is

how to block a website from a computer running xp

, or rather how to unlock.
Maybe there are such options as to track where the packets reach and where they fall?

Answer 1

Bulk ping-admin.ru/free_test/result/1448117556x5v4wko6p
...

Answer 2

My site didn't open on OS X :)
What about the browser? Downloaded another, checked?

Answer 3

Yandex browser/Windows 10
Website not loading

Answer 4

Maybe you have a cached version of it on another computer?