The table also lists reasons why the IP addresses were banned, and the time when this happened.
When you think you have resolved the problem that caused your IP to be listed, contact me (contact info available here), and I will remove you from the blacklist.
The most frequent cause of being blacklisted is a computer virus trying to spread over the network. PLEASE DO NOT ASK ME what to do about virii in your computer - I WILL NOT KNOW. Simply do not connect your computer to the network if you are not capable of keeping it in a state that does not disturb other users.