www.secure.sentris.net has no NS records.
NS records for this zone are defined at sentris.net.
NS records for this zone are defined at sentris.net.
Question and response
Question
dig www.secure.sentris.net. NS
Answer
www.secure.sentris.net. 14400 CNAME secure.sentris.net.
secure.sentris.net. 86400 NS ns.wahju.com.
secure.sentris.net. 86400 NS ns2.wahju.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0