whois
July 25th, 2008
A machine on my network was producing lots of outgoing traffic and I needed to track down what it was up to by getting the destination IP addresses from my router log and doing a whois lookup.
Some whois services are better than other. A good one is at DomainTools:
You can use this by just sticking the IP address you want to check on the end of the URL. For example:
http://whois.domaintools.com/212.58.250.36
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