Summary
ns2.cal.pl is a domain controlled by two nameservers at
cal.pl. They are on different IP networks. Incoming mail for
ns2.cal.pl is handled by one mailserver at
ns2.cal.pl themselves.
ns2.cal.pl has one IP number , which also has a corresponding reverse pointer.
ns2.netcorp2.pl,
dns2.newagy.com,
mail.ns2.cal.pl and
ns2.crontech1.pl point to the same IP.
e9.pl,
9g.pl,
ys.pl,
daj.pl,
cal.pl and at least 100 other hosts use this as a nameserver.
e9.pl,
9g.pl,
ys.pl,
daj.pl,
nuv.pl and at least 55 other hosts share nameservers with this domain.
mail.ns2.cal.pl are subdomains to this hostname.
cal.pl is a domain controlled by two nameservers also at
cal.pl. They are on different IP networks. Incoming mail for
cal.pl is handled by one mailserver also at
cal.pl.
cal.pl has one IP number , but the reverse is
ns1.cal.pl.
ns2.cal.pl is hosted on a server in France even though the hostname implies Poland.