indus11.playbackmail.com has no NS records.
NS records for this zone are defined at playbackmail.com.
NS records for this zone are defined at playbackmail.com.
Question and response
Question
dig indus11.playbackmail.com. NS
Answer
The response has no answer records.
Authority
playbackmail.com. 900 SOA ns-1640.awsdns-13.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0