mx1.orangecyberdefense.com has no NS records.
NS records for this zone are defined at orangecyberdefense.com.
NS records for this zone are defined at orangecyberdefense.com.
Question and response
Question
dig mx1.orangecyberdefense.com. NS
Answer
The response has no answer records.
Authority
orangecyberdefense.com. 3600 SOA dns1.equant.net. dns\.operations.orange.com. 2021121502 1200 300 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0