On Tue, Jan 07, 2003 at 09:50:15AM +0000, Nigel Wetters wrote: > It would be useful for those using the IP::Country::Fast module in log > analysis to know the accuracy of the result. At this point, I don't have > a clear idea of how to make this estimate. > > For example, it is possible that multinational companies (and ISPs) may > use US-registered IP addresses outside of the USA. It is difficult to > see how this could be measured.
Um. If you can get hold of the underlying data, rather than just the press release, then the data referred to in: http://www.linx.org/press/releases/081.thtml may be helpful, if you make some possibly sane assumptions about how LINX routing works. I have half an idea about how to do this, and know a couple of people who should be able to justify or shoot down my assumptions. > Greg suggested on IRC that it might be an idea to ask people their IP > addresses and country. Does anyone have any suggestions on how to > automate the process on a large enough scale to get a significant > result? That will certainly help once the sample size is sufficiently large enough. I'm quite interested in this as a problem, feel free to mail me offlist if you want to chat about it and can put up with my possibly not-sane whiffling. Ben
