mx.myfreedirectory.net has no NS records.
NS records for this zone are defined at myfreedirectory.net.
NS records for this zone are defined at myfreedirectory.net.
Question and response
Question
dig mx.myfreedirectory.net. NS
Answer
The response has no answer records.
Authority
myfreedirectory.net. 3600 SOA dns.myfreedirectory.net. hostmaster.myfreedirectory.net. 1639941104 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0