Block access from the TOR network to my domains

Hello everyone, I would like to know if anyone.
How to block access to the domains hosted in Plesk of the TOR network?
I currently have CSF installed since it is a bit more advanced than iptables.

SO: CentOS 6.5 (Final)‬
Versión de Plesk: 12.5.30 Actualización #59, última actualización 31/Ene/2017 03:44

Thank you very much.