Board Thread:Support Requests - Community Management/@comment-155613-20130410234527

I am an admin on the Star Trek Answers wiki and I have an anon user who often, if not always, posts obviously false answers to questions, and also posts inappropriate questions (either vulgar or racist) on the wiki. I have blocked the addresses but he seems to come back using an IP address starting with 97 (the rest of the numbers are different each time). Is there anything I can do other than block each address this person uses?  