Spam activities on server

[ntsite]

Recently I realized spam activities like registration, comments from two IPs, while the first one is spamming the websites with high load (according to 340 submitted evidences since 23 April 2011):

173.242.116.48
200.68.9.226

I guess it also affects other users on the server. I believe X10hosting can take actions to block such activities on it's servers.

Update:
New IPs:

87.236.232.98
68.68.20.186
196.35.33.39
186.212.50.102
122.248.251.37
66.84.12.34

[callumacrae]

This isn't x10hostings responsibility - there are hundreds of thousands of spammers, it's up to you to block them from your site. What happens when the spammer releases the ISP and someone else gets it? They'll be blacklisted from a large portion of the internet.

[ntsite]

I did it for my own by disallowing register and comments. Just wanted to inform you that, it may also harm another accounts.