go
www.ptc.pl has one IP number , which is the same as for ptc.pl, but the reverse is telenet.tnp.pl. ptc.pl, tnp.pl, www.tnp.pl and telenet.tnp.pl point to the same IP. ptc.pl is a domain controlled by two nameservers at ptc.pl themselves. They are on the same IP network. Incoming mail for ptc.pl is handled by one mailserver also at ptc.pl. www.ptc.pl is hosted on a server in Poland.

www.ptc.pl
a records
 
+ 80.244.128.16 80.244.128.0/19 AS21021 telenet.tnp.pl
+ --- telenet.tnp.pl

*.ptc.pl
mx records
mta.ptc.pl
+ 80.244.128.7 80.244.128.0/19 AS21021 -
+ --- -

ptc.pl
a records
 
+ 80.244.128.16 80.244.128.0/19 AS21021 telenet.tnp.pl
+ --- telenet.tnp.pl
ns-soa records
ns1.ptc.pl
+ 80.244.128.1 80.244.128.0/19 AS21021 -
+ --- -
ns records
ns1.ptc.pl
+ 80.244.128.1 80.244.128.0/19 AS21021 -
+ --- -
ns2.ptc.pl
+ 80.244.128.2 80.244.128.0/19 AS21021 -
mx records
mta.ptc.pl
+ 80.244.128.7 80.244.128.0/19 AS21021 -
+ --- -
ip numbers of host
80.244.128.16
ptrs of ip numbers
telenet.tnp.pl
hostnames sharing ip with a-records
.ptc.pl
.tnp.pl
ptc.pl
telenet.tnp.pl
tnp.pl
www.tnp.pl