I complained to my ISP about not being able to access some sites, this is their reply.
From ANT Communications>>
It appears because NBN set up all long term satelitel customers on the one IP address, that when a website domain decide to block a person, if they are on LTS it blocks them all.
The only way around it is to contact the website either by phone or email and complaint about being blocked and see if they will unblock you.
Or you can install vpn software to change your outgoing IP so it lets you in.
ANONYMOX is one our customers have been installing, its an ADD on to Google Chrome.
Whether or not this is the problem with the site I can not access since late December (except for Monday afternoon, when I could access it) I dont know, but if the above is true, it sounds like a pretty dumb thing to do.