171.128-255.21.16.82.in-addr.arpa has no NS records.
NS records for this zone are defined at 128-255.21.16.82.in-addr.arpa.
NS records for this zone are defined at 128-255.21.16.82.in-addr.arpa.
Question and response
Question
dig 171.128-255.21.16.82.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
128-255.21.16.82.in-addr.arpa. 3600 SOA ns1.server-centre.net. www.server-centre.net. 495 900 600 86400 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0