jpdev.imimailer.com has no NS records.
NS records for this zone are defined at imimailer.com.
NS records for this zone are defined at imimailer.com.
Question and response
Question
dig jpdev.imimailer.com. NS
Answer
The response has no answer records.
Authority
imimailer.com. 900 SOA ns-2027.awsdns-61.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0