* mike bailey: > Florian Weimer Said:
No, I didn't. Please use correct attribution lines. > I know the website http://whois.webhosting.info also offers this > feature. I've come to the conclusion that they just spider the web > for domain names, obtain a dns record, and then store the result in > a database. whois.webhost.info also offers the ability to check what > company owns that ip block. Which is probably just returned from > whois.arin.net . But it may also take reverse dns replies into > consideration. I don't think they do something like that. For example, http://whois.webhosting.info/217.16.28.239 is empty, although there are quite few pravda.ru domains are hosted on that IP address, and the PTR record provides a useful hint. It's more likely they use the publicly available zone files for .info, .biz, .org and .com/.net. By the way, is there a public document describing the zone file access program for .us? I've been told they offer something similar, but can't find any details on the registry web site. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
