Forum:IP unblocks itself

We have a problem on the Morphin Grid wiki. We've blocked IP address 184.15.4.24 several times, for inserting false information. But the ban never lasts more than a day before being mysteriously removed (the block log doesn't mention it ever being unblocked, but the deleted contribs proves that it is). What's going on and how do we make sure that the block sticks? Digifiend (talk) 14:02, October 15, 2012 (UTC)