mx.caodai-tttn.org has no NS records.
NS records for this zone are defined at caodai-tttn.org.
NS records for this zone are defined at caodai-tttn.org.
Question and response
Question
dig mx.caodai-tttn.org. NS
Answer
The response has no answer records.
Authority
caodai-tttn.org. 3600 SOA dns.caodai-tttn.org. hostmaster.caodai-tttn.org. 1662530297 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0