Perfectly possible. If it's possible for China to ban Google and for Turkey to ban Wikipedia, you can be sure that an ISP can block a VPN. :) All they have to d

Perfectly possible. If it's possible for China to ban Google and for Turkey to ban Wikipedia, you can be sure that an ISP can block a VPN. :) All they have to do is bad a certain range of IP addresses that correspond to that VPN provider.