On Fri, 22 Oct 2004, Gavin Harris wrote: > Not linux specific, but http://www.whois.sc -> advanced -> reverse IP > lookup. > > You have to sign up to use it, and pay to get more than 5 results. I > don't know how accurate it is... Relies on transfers for a zone being allowed to hostcount.ripe.net. It's another "intelligent guess" option.