162.160-27.162.51.209.in-addr.arpa has no NS records.
NS records for this zone are defined at 160-27.162.51.209.in-addr.arpa.
NS records for this zone are defined at 160-27.162.51.209.in-addr.arpa.
Question and response
Question
dig 162.160-27.162.51.209.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
160-27.162.51.209.in-addr.arpa. 86400 SOA ns1.he.net. hostmaster.he.net. 2017071706 10800 1800 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0