Why are my websites not working on My Wi-Fi?

I have 3 websites, www.stevesinyard.co.uk www.allysinyard.co.uk and www.floor13design.co.uk. For some reason, they will not load when i'm on my home network Wi-Fi! On my iphone, it won't load the site unless I go onto 3G and my friends can access those websites on their Wifis. So I'm guessing it has something to do with my Wi-Fi? If I go through a Proxy Site like Anonymouse, I can get to it fine.

I'm not too technical so I would appreciate any help in Lehmans terms. I have trying ipconfig/renew in cmdprompt.

This has happened since Saturday, I haven't changed or done anything so I'm not sure why they aren't loading. It just takes ages to load then (using Chrome) I get the "This web page is not available
The connection to www.stevesinyard.co.uk was interrupted." I can access other websites just fine!

Are you 'hosting' these sites yourself? If so, I'm guessing yopur ISP has changed some 'loop-back' setting…

As for speed - well your 'uplink' data rate is a lot slower than your download rate…