Re: [tor-dev] Tor and IP2Location LITE

Hi Tim,

> Are there any accuracy comparisons between MaxMind and IP2Location?
>
> We have noticed that GeoIP providers often focus on location accuracy for
> residential customers. But we use our GeoIP databases to locate both Tor
> clients (mainly residential) and Tor relays (mainly data centre).
>
> How is your accuracy for data centres?

I don't aware of any research papers targeting data center only. IP2Location should be highly accurate because we are using network routing information to determine physical location instead of registrant address.

For example, IP2Location is reporting 185.56.163.144 as in France after reviewing the network routing information as below. However, if you search the same IP address in other geolocation providers, you might see it as reported as North Korea, a country with limited Internet access.

Tracing route to 185.56.163.144 over a maximum of 30 hops

1     1 ms   <10 ms     1 ms 192.168.1.1
2     *        *        *     Request timed out.
3     5 ms     4 ms     3 ms 10.233.65.32
4   178 ms   179 ms   179 ms 10.55.200.67
5   270 ms   267 ms   273 ms ams-ix2.eu.iptransit.com [80.249.211.47]
6   283 ms   285 ms   283 ms xe-4-3-1.r2.ams.iptransit.com [204.26.60.115]
7   283 ms   284 ms   283 ms te2-4.r3.ams.sara.nl.iptransit.com [204.26.60.6]
8   282 ms   279 ms   281 ms te1-2.r2.lux.iptransit.com [204.26.60.9]
9   285 ms   284 ms   284 ms 204.26.60.123
10   288 ms   287 ms   287 ms 185.56.163.144

- Kim

On Wed, Aug 23, 2017 at 8:51 AM, teor <teor2345@xxxxxxxxx> wrote:

Hi Kim,

> On 16 Aug 2017, at 13:38, KL Liew <hexasoft@xxxxxxxxx> wrote:
>
> In term of accuracy, you can find the latest research paper published by TUM. IP2Location has good accuracy as reported in Table V.
>
> Title : HLOC: Hints-Based Geolocation Leveraging Multiple Measurement Frameworks
> Authors : Quirin Scheitle, Oliver Gasser, Patrick Sattler, Georg Carle from Technical University of Munich (TUM)
> PDF Access : https://arxiv.org/pdf/1706.09331.pdf

Are there any accuracy comparisons between MaxMind and IP2Location?

We have noticed that GeoIP providers often focus on location accuracy for
residential customers. But we use our GeoIP databases to locate both Tor
clients (mainly residential) and Tor relays (mainly data centre).

How is your accuracy for data centres?

T

--
Tim Wilson-Brown (teor)

teor2345 at gmail dot com
PGP C855 6CED 5D90 A0C5 29F6 4D43 450C BA7F 968F 094B
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xmpp: teor at torproject dot org
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