DNS Lookup Whois !

[NoOp]

On 09/05/2007 05:49 PM, Rick wrote:
> have a problem, need to find out how many websites,
> belong to a dns server... (don't know the websites)
> 
> example: if name server is: "ns1234.comp.com" 
> 
> how can I find out how many website are link to that name server ?,
> what command syntax would be used, or what application, if at all possible.
> 
> Major Thanks -
> Richard
> 
> 

Try http://whois.webhosting.info

The info is cached, so it's dated. But for instance:

http://whois.webhosting.info/ubuntu.com
shows that ubuntu.com is on 82.211.81.158 and that IP hosts 122 domains.

So now we look at:
http://whois.webhosting.info/82.211.81.158
and you can see what those 122 domains are.

Now if I look at the IP of one of the domain servers used by ubuntu.com:
http://whois.webhosting.info/193.201.200.34
I can see about 418 domains.

 From the terminal you can also see what other nameservers might share a 
DNS IP:

Example:
$ whois -h whois.nsiregistry.com 193.201.200.34

man whois for the -h option etc.

I know of no other non abusive way to do this directly.