The Undernet is the fourth largest publicly monitored Internet Relay Chat (IRC) network, c. 2011, with about 12 client servers serving 60,000 users in 11,000 channels at any given time.
IRC clients can connect to Undernet via the global round robin irc.undernet.org, the region-specific round robins us.undernet.org and eu.undernet.org, or a specific server from the server list.