It's even simpler: Those blocks are implemented in DNS. Pick 8.8.8.8 or some other public DNS server and blocks are bypassed.
(And pick another ISP - it's their job to provide neutral net access, not mess with it, especially not mess with it without court order or something just by request of some private companies)
(And pick another ISP - it's their job to provide neutral net access, not mess with it, especially not mess with it without court order or something just by request of some private companies)