Cerebrum
From MIXXnet Wiki
Cerebrum is a MIXXnet server located in Groningen, The Netherlands. It is operated by Peter Kruit (Revox).
Address: cerebrum.nl.eu.mixxnet.net
Address (IPv6): cerebrumv6.nl.eu.mixxnet.net
Ports: 6667
Contact: revox@mixxnet.net