Summary
*.pipni.cz has one IP number , via cname to
www2.pipni.cz , which also has a corresponding reverse pointer.
l.cz,
3am.cz,
k28.org,
enca.cz,
hkcz.cz and at least 100 other hosts point to the same IP.
pipni.cz is delegated to three nameservers, however one delegated nameserver is missing in the zone. All nameservers are at
pipni.cz themselves. Two of them are on the same IP network. Incoming mail for
pipni.cz is handled by two mailservers also at
pipni.cz. They are on different IP networks.
pipni.cz has one IP number , but the reverse is
ns.pipni.cz.
*.pipni.cz is hosted on a server in Czech Republic.