mx3.nameserver.net.au has no NS records.
NS records for this zone are defined at nameserver.net.au.
NS records for this zone are defined at nameserver.net.au.
Question and response
Question
dig mx3.nameserver.net.au. NS
Answer
The response has no answer records.
Authority
nameserver.net.au. 3600 SOA ns1.nameserver.net.au. hostmaster.nameserver.net.au. 2026020104 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0