omr016.pc5.atmailcloud.com has no NS records.
NS records for this zone are defined at pc5.atmailcloud.com.
NS records for this zone are defined at pc5.atmailcloud.com.
Question and response
Question
dig omr016.pc5.atmailcloud.com. NS
Answer
The response has no answer records.
Authority
pc5.atmailcloud.com. 900 SOA ns-644.awsdns-16.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0