User blog:Tomsmith95/Banning Users

Is there a way for admins to ban users or for normal editors to flag somebodies user profile or if they are not signed in, their IP? I've noticed recently that a number of the people ruining the Wiki are coming from the same IP (which can be found by clicking on the 'Wikia Contributor' link that can be seen when somebody has edited a page) or from the same profile and I think that being able to stop these people completely would greatly help making the wiki a better place. If you know the answer to this question or would like to contribute any more info on the situation please comment on this blog post promptly.