171.subnet256.116.153.202.in-addr.arpa has no NS records.
NS records for this zone are defined at 116.153.202.in-addr.arpa.
NS records for this zone are defined at 116.153.202.in-addr.arpa.
Question and response
Question
dig 171.subnet256.116.153.202.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
116.153.202.in-addr.arpa. 300 SOA ns1.pbase.net. dnsadmin.ns1.pbase.net. 2019070901 10800 300 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0