Can't access a few certain websites. What do?

Yeah a few websites I frequent I now am just getting the page loading to a blank white page. And I did a ping test to the site and it worked. But the traceroute to these sites got part way through then failed. One of the sites in Jamie Oliver's site. And a few others too.

And I know these sites are up and working. It is very strange to have 99.9% of all websites working but you can't access a couple ones that you really need. Makes you want to rip your hair out. Just so annoying.

And I am using the OpenDNS DNS. And that works for all websites bar these few I need. And is there anything I can do about this? Really it's just so annoying.