Penetration Testing: Re: IP Range

[Brian O'Berry <brian () zen-data com>]

Try 'whois -h whois.arin.net company_name'

You can also use the '*' wildcard, e.g.,
'whois -h whois.arin.net company_substring\*'

Maybe someone can respond about whether a Windows version of whois exists.

John Madden wrote:
> Hello,
>
> Where just about to begin a pentest engagement and the
> client wants us to know if we can find out how many IP
> blocks they have. Is there a way to find out all the
> IP blocks of a company ? You've got the usual e-mail
> domain name to find at least one but what if they have
> 2,3 + IP blocks ?
>
> Any ideas ?
>
> thanks 
>
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