On 2017-09-13 15:03, Per Jessen wrote:
Bengt Gördén wrote:
Den 2017-09-13 kl. 13:52, skrev Per Jessen:
No. It does not work like that. RIPE-db is at best considered if there is no other option. Trust me on this. Been doing IP registry for 23 years now. Okay, how about explaining how it does work then?
It is empirical findings. Especially the country field in inetnum (see below). When it comes to Maxmind no one except Maxmind them self can say how it really works. But it is not country code in inetnum in ripe-db as a first criteria. Maybe the last one and sometimes even not that. Maxmind said in some old correspondence with me that they do traceroute and ping to triangulate the position of an IP address.
Unless the country information is stored elsewhere, eventually they would still need to consult ripe-db? Anyway, we're going off-topic.
I believe Google has its own database. They use matching GPS data from mobile phones to the IP android phones get. You have to explicitly opt out to not give that info to google, the phones scan WiFi AP for that purpose. It doesn't always work. When I tether mu laptop I get a 10.* address, with a common exit point that can be hundreds of km away - and then google blocks immediately my account and tells me some one stole my password. Happened last Monday to me. -- Cheers / Saludos, Carlos E. R. (from 42.2 x86_64 "Malachite" at Telcontar)