mx.socialbuzzonline.com has no NS records.
NS records for this zone are defined at socialbuzzonline.com.
NS records for this zone are defined at socialbuzzonline.com.
Question and response
Question
dig mx.socialbuzzonline.com. NS
Answer
The response has no answer records.
Authority
socialbuzzonline.com. 3600 SOA dns.socialbuzzonline.com. hostmaster.socialbuzzonline.com. 1802294725 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0