what don't you understand?
if your IP today is zzz.yyy.xxx.www and yesterday was zzz.yyy.xxx.vvv and tomorrow will be zzz.yyy.uuu.ttt then an IP range ban of zzz.yyy.???.??? includes all of those IP's.
do you really think server owners and hosters haven't got a clue what they are doing (actually don't answer that since most haven't). but some do know and keep records of your IP's and they can see which player names or ID's have connected and from what IP's.
just banning you from 2302 means that u still get to see all those players having fun, but alas you cannot connect.
consider the ? as a FU from the server owner