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[atlas] Geo locations confirmed
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Robert Kisteleki
robert at ripe.net
Tue Aug 20 13:43:35 CEST 2013
On 2013.08.20. 13:18, Marco Davids (SIDN) wrote:
> Hi,
>
> Are any of the geo-locations of Atlas probes confirmed, double-checked,
> or verified by RIPE? Or do we just have to take for granted, whatever
> the owner of the probe enters in the probe's settings ?
>
> Thanks,
>
Hi,
Generally speaking, we believe what the users claim as the probe's
geolocation. However, we also have an internal process to check this against
a geoip database (Maxmind). In the vast majority of the cases the results
match; the biggest discrepancy is usually because the hosts give relatively
precise information and Maxmind is, in many cases, "country only".
We do see some odd cases though, which may be because the hosts... khm,
"misrepresent the facts", or the probe has been moved from its initial
location, or the geoip database is wrong. We also plan to use actual
("anchoring") measurements to help us decide what the reason is.
Bottom line: for practical purposes we take the hosts' input for granted and
we could disclose more findings if the community wants us to.
Regards,
Robert
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