smtpin01.netos.com has no NS records.
NS records for this zone are defined at netos.com.
NS records for this zone are defined at netos.com.
Question and response
Question
dig smtpin01.netos.com. NS
Answer
The response has no answer records.
Authority
netos.com. 86400 SOA ns-1.nuoz.net. postmaster.nwnexus.com. 2024052901 7200 3600 864000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0