ZZANET (AS4242422811) is a research network run by Evan Pratten. This network announces both DN42 and public IPv4 and IPv6 addresses.
For the time being, the FFIXP network is piggybacking off the ZZANET backbone routing gear for cost-saving reasons. As the FFIXP traffic flow grows, these projects will be physically separated to different servers (with the goal of the FFIXP router being colocated to a peering facility in the Toronto area).
For more information on the ZZANET project, check out this blog post.