The other day, our IT security guy contacted me to let me know that my computer had accessed a Web site that potentially installed some adware/spyware on my computer. He asked me to run some standard scans (virus, adware, spyware, etc.) to make sure that my computer was clean.
I went ahead and ran the scans and found that my computer appears to be clean. However, while doing research to figure out what had caused the problem in the first place, I came across a very interesting Web site.
YouGetSignal.com is a Web site that offers advanced IP related searches. You can search for the physical location of an IP address, complete with a Google map to display the results. You can use a visual traceroute tool, which is also accompanied by a Google map.
The most interesting utility I found, though, was an IP lookup that allows you to list all of the domain names associated with a particular IP address. I got some very interesting results when I searched for some of my own domains.
For instance, the IP address associated with one of my hobby sites hosted at Netfirms (dcevolution.net) came up with 164 other Web sites using the same IP address.
However, when I searched for Web sites using the same IP address as the hobby sites I have hosted at site5 (dchelp.net), the only results that came up were my other sites.
Searching for centernetworks.com brings up 760 domains using the same IP address, while htmlcenter.com brought up 48 domain names, which all appear to be offshoots of htmlcenter.com (although some of them are rather questionable, so I’m not sure if they are actually associated with htmlcenter or if it is just a weird coincidence that they came up with the same IP – or if the owners of those Web sites are using some sort of proxy to hijack htmlcenter’s IP).
Still, it’s kind of fun to search for that sort of information, and extremely interesting.