Re: GeoIP information

[William Herrin <bill () herrin us>]

On Thu, Sep 24, 2015 at 9:33 PM, Ian Clark <ian.clark () dreamhost com> wrote:
> Where do GeoIP companies get their data, if not whois records?

I would assume that they query whois for one of their sources. They
don't have to enter any contract with ARIN to do so but they also
can't promptly collect any sizable portion database that way. That
isn't the same as signing up for bulk whois access
(https://www.arin.net/resources/request/bulkwhois.html).

I imagine they also do traceroutes to identify the last known location
in the route.

Regards,
Bill Herrin

-- 
William Herrin ................ herrin () dirtside com  bill () herrin us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>