smtp.net-messages.net has no NS records.
NS records for this zone are defined at net-messages.net.
NS records for this zone are defined at net-messages.net.
Question and response
Question
dig smtp.net-messages.net. NS
Answer
The response has no answer records.
Authority
net-messages.net. 300 SOA x.ns.joker.com. hostmaster.joker.com. 2024110686 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0