Blocking domains in htaccess and looking up ip adress

[kalle7]

Hi all,
I have some questions that I hope you could help me out with.

There are some sites that are linking to my galleries and free sites and sending loads of traffic (that does not convert). I would like to block these domains from linking to my things, but dont know how to do it. I have blocked fusker and sites like that with my htaccess file, but I have no idea how to block domains or ip adresses.

Also I would like to ask if someone knows how to look up other domains ip adresses. I dont know if I ask the question the correct way so feel free to correct me.

Thanks everybody! |cool|