The Undernet Channel Service Committee (CSC) was created back in 1995 as a way to provide channel stability and help prevent takeovers. This is accomplished through the use of X, which helps maintain all registered channels on the network and give channel managers an easy means to keep up with both a channel userlist and banlist.
You can learn more about the CSC, register your channel, or download information about X at the http://cservice.undernet.org. Or, if you're on the Undernet, just type /join #cservice and ask one of the many helpers in the channel. The CSC provides a valuable and extremely comprehensive service to Undernet users, so be sure to take advantage of all that they have to offer the Undernet community.
Undernet offers several services via the World Wide Web. These few sites offer a good jumping off point to several of them.