149.128-255.208.206.83.in-addr.arpa has no NS records.
NS records for this zone are defined at 128-255.208.206.83.in-addr.arpa.
NS records for this zone are defined at 128-255.208.206.83.in-addr.arpa.
Question and response
Question
dig 149.128-255.208.206.83.in-addr.arpa. NS
Answer
The response has no answer records.
Authority
128-255.208.206.83.in-addr.arpa. 3600 SOA level.np6.com. masterdns.np6.com. 2012050897 3600 600 604800 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0