go
d.ns.nic.cz and d.ns.cznic.org point to 193.29.206.1.

d.ns.cznic.org
a records
 
+ 193.29.206.1 193.29.206.0/24 AS25192 d.ns.nic.cz
+ --- d.ns.nic.cz

d.ns.nic.cz
a records
 
+ 193.29.206.1 193.29.206.0/24 AS25192 -
+ --- -
ip numbers of host
193.29.206.1
ptrs of ip numbers
d.ns.nic.cz
hostnames sharing ip with a-records
d.ns.cznic.org
d.ns.nic.cz
domains using this as nameserver
0.2.4.e164.arpa
cz
dns-tester.cz
dnssec-tester.cz
dnssec.cz
dnstester.cz
nic.cz
signed.dnstester.cz