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How can I find out who owns an IP address?

I once came across a site that gave me my IP and also the registered name of the computer owner? me. Do you happen to know this site or another one where I can find this information?

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I assume by computer owner you mean domain name? To find out who owns an IP address or a particular block of addresses you can check with the registrar. A good online source to track down this type of information is or if you are on a Linux pc "whois" will also work. Other useful sites include:

This was first published in July 2003

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