sky.li, lay.ch, lgr.ch, jvm.ch, ish.ch and at least 100 other hosts use this as a nameserver. ch-meta.net is a domain controlled by three nameservers at ch-meta.net themselves. All of them are on different IP networks. Incoming mail for ch-meta.net is handled by two mailservers also at ch-meta.net. They are on the same IP network.