"defamatory or blasphemous"?
As judged by whom? The upstanding, moral minority as usual no doubt!
Of course it's down to the ISPs, who really don't a give monkey's, who have to enact this sort of stupidity to the best of their ability based on "guidelines" from aforementioned moral zealots. It's also the ISPs that carry the can when they don't get it quite right and the moral zealots finally consider they have something worthwhile to do with their pathetic empty lives, freaking out over some tiny thing that 99.99% of the population couldn't care less about.