lucy24 - 9:16 pm on Mar 14, 2013 (gmt 0)
... but if the IP resolves to anything other than an established human ISP-- meaning that someone's running a bot off their home computer --don't hold your breath waiting for action. Just lock out the whole IP range. And hope you don't get too many from neighborhoods like 91. or 198.* where a /20 counts as a vast block.
* The latest trouble spot is 185. which had barely started being assigned when RIPE slapped down the /30 limit. Ugh.