Hi! IP addresses don't exactly map to whois data and sadly, reverse DNS upkeep seems to get worse on a year by year basis [1]. ARIN or a service like Team Cymru's ASN lookup will at least tell you the netblock owner, who should at least have awareness of which of their customers are assigned which bits of their allocation.
-n 1 - Dear LOPSA members, If you teach a class on system fundamentals, pretty-please-with-sugar-and-a-cherry-on-top explain to your students how important DNS is. Love, A hiring manager who has never once had an interviewee accurately explain how DNS works. On Mon, Feb 25, 2013 at 8:19 AM, Andrew Hume <and...@research.att.com>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. > > andrew > > > ----------------------- > Andrew Hume > 623-551-2845 (VO and best) > 973-236-2014 (NJ) > and...@research.att.com > > > > > _______________________________________________ > 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/ > > -- ------------------------------------------- nathan hruby <nhr...@gmail.com> metaphysically wrinkle-free -------------------------------------------
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