mx.chikaweb.com has no NS records.
NS records for this zone are defined at chikaweb.com.
NS records for this zone are defined at chikaweb.com.
Question and response
Question
dig mx.chikaweb.com. NS
Answer
The response has no answer records.
Authority
chikaweb.com. 3600 SOA dns.chikaweb.com. hostmaster.chikaweb.com. 1182876174 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0