233.128-255.56.138.185.in-addr.arpa has no NS records.
NS records for this zone are defined at 56.138.185.in-addr.arpa.
NS records for this zone are defined at 56.138.185.in-addr.arpa.
Question and response
Question
dig 233.128-255.56.138.185.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
128-255.56.138.185.in-addr.arpa. 2095 SOA pns21.cloudns.net. support.cloudns.net. 2025112802 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0