mx.thereedblog.com has no NS records.
NS records for this zone are defined at thereedblog.com.
NS records for this zone are defined at thereedblog.com.
Question and response
Question
dig mx.thereedblog.com. NS
Answer
The response has no answer records.
Authority
thereedblog.com. 3600 SOA dns.thereedblog.com. hostmaster.thereedblog.com. 1807213414 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0