mx.insurproviders4you.com has no NS records.
NS records for this zone are defined at insurproviders4you.com.
NS records for this zone are defined at insurproviders4you.com.
Question and response
Question
dig mx.insurproviders4you.com. NS
Answer
The response has no answer records.
Authority
insurproviders4you.com. 3600 SOA dns.insurproviders4you.com. hostmaster.insurproviders4you.com. 1418537445 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0