Summary
info.cyf-kr.edu.pl has one IP number , which also has a corresponding reverse pointer.
info.cyfro.net and
info.cyfronet.pl point to the same IP.
tpn.pl,
ibed.pl,
clico.bg,
clico.pl,
cyfro.net and at least 100 other hosts use this as a nameserver.
jaslo.pl,
debica.pl,
krosno.pl,
tarnow.pl,
krakow.pl and at least ten other hosts use this as a mailserver.
cyf-kr.edu.pl is delegated to three nameservers, however one delegated nameserver is missing in the zone and one other nameserver is listed instead. Two nameservers have the same IP number. All of them are on the same IP network. Incoming mail for
cyf-kr.edu.pl is handled by two mailservers at
cyf-kr.edu.pl themselves. They are on the same IP network.
info.cyf-kr.edu.pl is hosted on a server in Poland.