mx.eternalsunbeam.net has no NS records.
NS records for this zone are defined at eternalsunbeam.net.
NS records for this zone are defined at eternalsunbeam.net.
Question and response
Question
dig mx.eternalsunbeam.net. NS
Answer
The response has no answer records.
Authority
eternalsunbeam.net. 3600 SOA dns.eternalsunbeam.net. hostmaster.eternalsunbeam.net. 1452738462 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0