> This might be useful: > > http://www.team-cymru.org/Services/ip-to-asn.html > > I've used the DNS service to do a few thousand lookups but for a > million request you probably want to use the "bulk whois" service. > > On Mon, 25 Feb 2013, Andrew Hume wrote: > >i am asking this for a friend who needs to remain unidentified. > >she needs to get whois type information for approx 1M ip addresses in teh US. > >she can, and has, just simply bang out the queries but by observation, > >one's ip address will get blacklisted if the query rate exceeds 1000 or so > >per day. > >apart from the ethically dubious technique of renting amazon servers and > >using > >them until they get blacklisted, is there any better way to get this > >information > >quicker? like a commercial service? we expect the data changes slowly, so > >month or 3 old data would likely be fine.
You might point her to robtex.com, my favorite place to dig up such info. Possibly she will abandon her project in favor of talking to them about a data-sharing arrangement. I wouldn't re-invent the wheel - everything DNS and AS is there*. -- Charles * Don't miss the clickable AS-spaghetti maps _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
