209.192-27.93.18.194.in-addr.arpa has no NS records.
NS records for this zone are defined at 192-27.93.18.194.in-addr.arpa.
NS records for this zone are defined at 192-27.93.18.194.in-addr.arpa.
Question and response
Question
dig 209.192-27.93.18.194.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
192-27.93.18.194.in-addr.arpa. 3600 SOA dns9.telia.com. backbone.telia.net. 1774483200 21600 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0