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paul at clubi.ie
paul at clubi.ie
Mon Nov 20 18:16:19 GMT 2006
On Mon, 20 Nov 2006, Dave O Connor wrote:
> Geolocation is pretty accurate these days, certainly to the city
> level. Any web service can tell who you are to the city level
> pretty accurately without any prior information.
That's bull, sorry. I was with you on "pretty accurate", but you lost
me with the claim in the second sentence. Geo-location might
correlate "pretty accurate(ly)" with end-user location across a
large sample of addresses, however, for any given IP you just can't
tell where the end-user is, sorry.
- The IP range may have a very wide geo-graphic useage, despite some
some specific attribution in registrar records..
- The end-user may not be located at the IP address you see
FWIW, of the 3 or 4 networks I use, only 1 gets geo-located to
city-level at all accurately, according to
- boron.eu.sun.com apparently is located in Washington DC, despite
the clue in the hostname.
- the VPN and/or corporate caches case
- use another network and apparently I'm in London
- the 'network allocation that is used across a wide geographic
The only one which gets me "right" are one network which is pretty
tied to a certain city for quite obvious reasons, and another network
for which I filled in the whois for the assignment (if it weren't for
that, geo-IP thingies would have me in Dublin, where the delegating
ISP is, regardless of where I was in Ireland), so it doesn't count -
I could fill anything in I wanted.
So sorry but your claim is quite wrong, at least to "can tell who
/you/ are" granularity...
Paul Jakma paul at clubi.ie paul at jakma.org Key ID: 64A2FF6A
An ounce of application is worth a ton of abstraction.
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