m101.em.secureserver.net has no NS records.
NS records for this zone are defined at secureserver.net.
NS records for this zone are defined at secureserver.net.
Question and response
Question
dig m101.em.secureserver.net. NS
Answer
The response has no answer records.
Authority
secureserver.net. 3600 SOA cns1.secureserver.net. dns.jomax.net. 2026030311 300 600 1209600 3600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0