Using IP is pointless.
The IP is the address that passed the block to blockchain.
Firstly it would require each pool to be connected directly to blockchain
(which there is no reason for a pool to consider that important to do)
and it can be any bitcoind that's connected to blockchain that is able to pass it faster to blockchain.
Basically the technicalities (of which there are many more) mean the IP is in no way a reliable way to identify who found the block.
Re: BItfury
My pool's last orphan race was with Bitfury ... we won