243.128-255.230.185.89.in-addr.arpa has no NS records.
NS records for this zone are defined at 128-255.230.185.89.in-addr.arpa.
NS records for this zone are defined at 128-255.230.185.89.in-addr.arpa.
Question and response
Question
dig 243.128-255.230.185.89.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
128-255.230.185.89.in-addr.arpa. 1800 SOA ns1.zcom.cz. hostmaster.zcom.cz. 1774838210 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0