mail.m1net.com.sg has no NS records.
NS records for this zone are defined at m1net.com.sg.
NS records for this zone are defined at m1net.com.sg.
Question and response
Question
dig mail.m1net.com.sg. NS
Answer
The response has no answer records.
Authority
m1net.com.sg. 900 SOA pridns.m1net.com.sg. hostmaster.m1net.com.sg. 2015042345 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0