How to exactly determine country of an exit node

[Nico Weinreich]

Olaf Selke schrieb:
> I supposed all.de using a stale GeoIP db version.
> https://torstatus.blutmagie.de using a more recent GeoIP database
> correctly shows GB for this tor node.
>
>   
OK. Could it be that this ip address changed the owner in the past and 
because of this your GeoIP db shows the correct country and all.de shows 
the wrong country? I thought about to cache the whois query for an ip 
address locally in a file. So I have to renew the local cache after a 
given time to be sure, changes in ripe db are taken into account.
BTW: do the tor status homepages show the available servers in real time?

Cheerio
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