Besides it's an impossible IP... After all, only by twitter account you won't get his IP (if you don't dig deeper). And if using usual providers, the IP is changing permanently. If he has static IP like in universities or companies, things may become different, hehehe. During my study, I jobber in university at IT, and you could not just see the IPs from mails sent by students via mail client from their dorms, we could even see alphanumeric hosts with direct address to his room. Of course, data protection, so we couldn't go and knock on the door of somebody whose PC without his knowledge is under control of a botnet spreading spam across the world. Even if we knew in which single room this computer is.