dns.cnidogtraining.com has no NS records.
NS records for this zone are defined at cnidogtraining.com.
NS records for this zone are defined at cnidogtraining.com.
Question and response
Question
dig dns.cnidogtraining.com. NS
Answer
The response has no answer records.
Authority
cnidogtraining.com. 3600 SOA dns.cnidogtraining.com. hostmaster.cnidogtraining.com. 1804251372 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0