Richard Morgan wrote:
> Quoting Paul M Foster <paulf@quillandmouse.com>:
>
>> Richard Morgan wrote:
>>
>> > Quoting Paul M Foster <paulf@quillandmouse.com>:
>> >
>> >> Two questions:
>> >>
>> >> 1. Since many sites can share the same IP, is there any way to tell
>> >> all the websites which share an IP?
>> >>
>> >> 2. Assuming you have a "reseller account" with a hosting company,
>> >> where they give you two IPs for your sites, is it possible or probable
>> >> that they have also given someone else those same IPs? Is this common
>> >> practice or not?
>> >>
>>
>>> Yes, it's very common to "oversell" IP's since they are such a
>>> precious thing,
>>> nowadays. You should be able to find all of the hosts on a given IP
>>> with
>>> reverse DNS and some commercial web hosting services, like whois.sc.
>>> Also,
>>> Netcraft may give you that information, too.
>>>
>>
>> Reverse DNS won't do it. I tried.
>>
>> Here's my understanding of how this works. Correct me if I'm wrong.
>> Let's say server alfa is the authoritative DNS server for 50 domains.
>> Its BIND tables show all the translations from sitename to IP. But a
>> DNS query supplies a sitename and asks for an IP. Alfa is glad to
>> oblige, but that query doesn't say anything about what *other* sites
>> share that IP. Now, I don't know much about how DNS works. I don't
>> know how those DNS tables are populated. Are there CNAME entries, A
>> entries, PTR entries for each site in the tables? But how would you
>> get a flush of those tables? Trying reverse DNS didn't do it. I'll
>> supply the IP offlist, if you like (I don't want that IP up on the
>> internet forever for people to hack).
>>
>> Whois.sc translates to domaintools.com. Their reverse DNS requires
>> membership.
>
>
>
> Sorry that I can't help you more - I use whois.sc for that purpose. You
> could
> also try http://www.dnsstuff.com/
Yeah, those are the guys I did reverse DNS with in the first place.
Paul
-- Paul M. Foster ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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