Hi ErhanKarabekir,
Yes, you can block the entire IP range using N360 V6.
You can check the following link :
https://www-secure.symantec.com/norton-support/jsp/help-solutions.jsp?docid=20100120112623EN&lg=engl...
If you think this helps or you need further help please let us know.
Regards,
Sagar
