nanog mailing list archives
Re: IPv4 country of origin
From: William Waites <ww () styx org>
Date: 03 Oct 2002 15:28:39 -0400
"alex" == alex <alex () yuriev com> writes:
alex> Just because free public dbs dont have that info does not alex> mean that it does not exist. i guess the question is, "how to ascertain the accuracy of the data?" if you have a collection of n known address to location mappings, evenly distributed over the address space, you'd want to approach one of the private db vendors and say, "do lookups on these n addresses and tell me the answers." if there's a good correlation between the known data and the answers, then it might make sense to purchase data [*] from those people. but. it is probably necessary to construct the set of control data by hand, which might be a big job. what is a sufficiently large n? for n sufficiently large, are the vendors likely to answer the question? i suspect that, in real life, it will come down to trusting the vendors' assertion that their data is accurate... -w [*] purchase data!?!? doesn't information want to be free? or is that passé? oh well... -- William Waites <ww () styx org> Idiosyntactix Research Laboratories http://www.irl.styx.org
Current thread:
- IPv4 country of origin Ralph Doncaster (Oct 02)
- Re: IPv4 country of origin John Payne (Oct 02)
- Re: IPv4 country of origin Joe Abley (Oct 02)
- RE: IPv4 country of origin Barry Raveendran Greene (Oct 03)
- RE: IPv4 country of origin alex (Oct 03)
- RE: IPv4 country of origin Ralph Doncaster (Oct 03)
- RE: IPv4 country of origin alex (Oct 03)
- Re: IPv4 country of origin John Payne (Oct 03)
- RE: IPv4 country of origin alex (Oct 03)
- RE: IPv4 country of origin Gary E. Miller (Oct 03)
- RE: IPv4 country of origin alex (Oct 03)
- Re: IPv4 country of origin William Waites (Oct 03)
- Re: IPv4 country of origin Stephen Sprunk (Oct 03)
- Re: IPv4 country of origin alex (Oct 03)
- Re: IPv4 country of origin Gary E. Miller (Oct 03)
- Re: IPv4 country of origin Bradley Dunn (Oct 03)
- Re: IPv4 country of origin Gary E. Miller (Oct 03)
- Re: IPv4 country of origin alex (Oct 04)
- Re: IPv4 country of origin Stephen Sprunk (Oct 04)
- Re: IPv4 country of origin alex (Oct 04)
- Re: IPv4 country of origin dre (Oct 03)