banning an ip via iptables

[wpte]

I put it in a TXT file, so the lay-out won't be lost
but this is pretty random...

I just noticed this guy as like... 6 IP adresses

and no, I don't think it's nice to post up someone's ip
this time one of his is in the list to

I'm gonna list everything now, try if it works

just a question...
if I have like a host with subdomains, and I ban the standart host... will it also do all the subdomains?
cos he has a big range, and far over 6 ip's