Originally Posted by kalamaca
the router is handing them out...
WAN IP address : 91.x.x.183
Gateway : 91.x.x.1
Primary DNS server : 193.x.x.101
Secondary DNS server : 193.x.x.100
I'm not sure what to tell you as I don't know the address of Orange UK's UMA gateway. If you can find this information out then you can try pinging it from your computer. If you can't ping it from the computer then its a problem with your router/ISP's DNS.