ip not found why help!

[darren01]

Hi all
I was wondering if anyone could help me with this ,
I moved house this year and since then I have been unable to play CBM on line ,when ever I try to play multi player ,I get this message sent back to me; IP address not found .
I have tried all the IP’s I have on my PC to get it to work, but none of them seem to work!
The funny thing is the before I moved house I had no problems at all, the person I used to play has the same IP address as before?
So why can I not play him any more?
Darren