I think theymos has IP address used by Satoshi Nakamoto but the admin won't give that information if there is no valid request from police, governments.
I remembered I read that Satoshi Nakamoto always used Tor.
I did a little search and found this out;
I'll probably release Satoshi's PMs and logged IPs addresses in ~8 years. This'd probably be of great historical interest.
(Though he always used Tor, as far as I can tell.)
2021 edit: I changed my mind: I am not going to release Satoshi's PMs in 2021. See my post
here.
But later decided not to go through with it. If you are curious to know why then check this
post.