mx.firesidekc.com has no NS records.
NS records for this zone are defined at firesidekc.com.
NS records for this zone are defined at firesidekc.com.
Question and response
Question
dig mx.firesidekc.com. NS
Answer
The response has no answer records.
Authority
firesidekc.com. 3600 SOA dns.firesidekc.com. hostmaster.firesidekc.com. 1487281096 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0