Block spider / user for ever

How can I block 230-216.205.94.dellhost.com from getting access to my sites. I think he is going to try to copy my sites. Dellhost isn't responding.

Adding it to robots.txt file is not an option, because he doesn't care about that. I want to block him (and other future problems), not ask him not to spider my site.

Can I add something to my http.conf to deny access?

 

 

 

 

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