Does anybody know where I can find out who's IP adress this is?

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A role model to mankind:
Jun 13, 2001
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Støvring, Denmark
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It's not because someone has offended me and I want to kick his ass, but because I got a security alarm on my computer and it said that a computer had tried accessing my computer using a trojan horse (called "Backdoor/SubSeven) and it showed the IP Adress of the computer and I want to find out who it is. It may be my brother as he once installed a program so he could control our computer from his place.