I wasn't sure where to put this but as I'm sitting on Spark right now I thought this would be a start.

I have a couple of websites hosted with JoneSolutions in the US. Earlier today I couldn't access one of them using tablet at a house on a Vodafone connection but I could with my Skinny phone. The tablet worked on the site fine through a hotspot but timedout on the landline connection. I took the tablet home and it connected to the sites with no problems, I'm on Spark. This afternoon however the same thing is happening on my connection. I cant access the sites at all (on Spark nor 3G) but my friend can now access them on Vodafone !

I've read a few threads suggesting caching issues when people have had similar issues. I'm currently waiting for a Spark rep on the phone so thought I'd ask here if there was anything I can check whilst I wait. JoneSolutions, as well as intoDNS and Pingdom all say the sites are up and running.

I know very little about routing internet traffic, so is there a crash course I can read online somewhere to give me some pointers on how to troubleshoot this ? I've done the usual 'rebooting' things with no luck.

Cheers