smtp.altomail.net has no NS records.
NS records for this zone are defined at altomail.net.
NS records for this zone are defined at altomail.net.
Question and response
Question
dig smtp.altomail.net. NS
Answer
The response has no answer records.
Authority
altomail.net. 300 SOA x.ns.joker.com. hostmaster.joker.com. 2024110766 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0