full-disclosure - www.whois.sc

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Date: Tue Jun 14 14:09:56 2005
From: a.gietl at e-admin.de (Andreas Gietl)
Subject: www.whois.sc

As the results are not very accurate and i see no possibility to gain
these information directly from the host running the ip or any entries
in die ptr for the ip, i guess they just keep a database of domains and
ther ip-adresses and do a lookup on the ip for that ip.

Jimmy Stewpot wrote:
> Hello,
> 
> I have recently seen a web page www.whois.sc. One of the features that
> they have is a "reverse ip" lookup. With that tool I can lookup the IP
> address of a server and it will return how many domains are hosted on it.
> 
> What I have been trying to figure out is how does that work? I did a
> tcpdump on the server that I looked up and it didnt see any abnormal
> packets. Does anyone have any idea how that feature works?
> 
> For example If lookup the following :
> 
> http://www.whois.sc/reverse-ip/?lookup=210.193.162.9
> 
> It comes back and shows me several domain names hosted (two to be exact).
> 
> Can anyone shed some light on that?
> 
> Thanks
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