IP 70.242.8.31, currently. This is public information - anyone can get it just by pinging that site, which will cause a DNS lookup.
I have a feeling you are frustrated, but please don't be mad at me. This is a DNS issue. It's that simple. The fact that you can't get to one website, yes, means that DNS is screwed up. The reason I say this is that the ping *response* doesn't matter - what matters is that your computers cannot resolve 'bluescreens.livenode.com' to an IP address.
I have no idea why you keep bringing up security. Again, this has nothing to do with security or browsers - it's purely a DNS issue, unless both of your machines have some oddball filtering software on them (at the IP layer) to stop lookups of certain IP addresses, which is why I asked you what happened with your machine if you booted in safe mode with networking and tried it. Did you ever do that?