Blackout from outside the US??

So this is odd. I can not access a whole bunch of sites from my computer (I can get them on my iPhone though...)

I can not go to:

boston.com

nytimes.com

cnn.com

sfgate.com

latimes.com

facebook.com (intermittently)

My 'Net diagnostics say everything is OK. I also checked my broadband speed...very fast. But getting 'unknown' host (or 'can't find server') when trying cnn.com, et al, is rather disconcerting.

BTW Google is fine.

Curious....