0.0-127.77.71.206.in-addr.arpa has no NS records.
NS records for this zone are defined at 0-127.77.71.206.in-addr.arpa.
NS records for this zone are defined at 0-127.77.71.206.in-addr.arpa.
Question and response
Question
dig 0.0-127.77.71.206.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
0-127.77.71.206.in-addr.arpa. 900 SOA ns-732.awsdns-27.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0