nsb.n0c.com has no MX records.
Question and response
Question
dig nsb.n0c.com. MX
Answer
The response has no answer records.
Authority
n0c.com. 3600 SOA nsa.n0c.com. hostmaster.n0c.com. 2026030608 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0