Who is blocking it, and with what? L
you could go to some unblocking sites like https://www.scarcup.com or https://www.vtunnel.com or some others just look it up on google there are heaps out there. but remember https:// instead of http:// at the start of the name they do not work otherwise. Or if that doesnt work you can try going to terminal or command promt and type "ping " then the website that you want. In a few seconds a bunch of numbers should pop up like 18.104.22.168 copy these numbers and paste them into your address bar and that should take you to the site. This method sometimes does not work though so i would advise the first.
you see that little box in the upper-right-hand corner? Right next to is Search Type in "unblock a website" and click Search