Friday, April 18, 2008

IP Address Lookups by Tor nickname and fingerprint

Interesting discovery today when adding support for IP Address Lookups on Tor node nicknames and fingerprints. Anyone can now do a lookup with node= or fingerprint= specified as a URL parameter, as in the following examples:

http://www.showmyip.com/?node=peacetime
http://www.ippages.com/?fingerprint=2f63b6febe2c1fdddef2dd850b77b88c05711cf9

Previously you could only do lookups by IP Address, Host name, or "long" IP number as in:

http://www.showmyip.com/?ip=75.125.82.140
http://www.ippages.com/?host=adobe.com
http://www.lookupip.com/?ipn=1266504332

When I ran some tests on node=peacetime I found, by way of the new Tor network presence history data, that there were quite a number of nicknames using the same IP Address 128.31.0.34 over at mit.edu: peacetime, moria500, moria1, moria2, moria1000 and maybe more. What the heck are you doing over there Nick, arma and Roger? :)

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