Merit to Temporarily Use 2a00:0000::/12 for Darknet Experiment
Starting on 1 November 2012, Merit, a non-profit research organisation, will temporarily use and announce 2a00:0000::/12 as part of its darknet experiment. The range was allocated to the RIPE NCC by the IANA.
A similar experiment was also performed by Merit for IPv4.
More information on this IPv6 Darknet Experiment, including its background and goals, can be found on RIPE Labs.