mx.judgeon.net has no NS records.
NS records for this zone are defined at judgeon.net.
NS records for this zone are defined at judgeon.net.
Question and response
Question
dig mx.judgeon.net. NS
Answer
The response has no answer records.
Authority
judgeon.net. 3600 SOA dns.judgeon.net. hostmaster.judgeon.net. 1399062383 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0