mailin.ng.telekom.net has no NS records.
NS records for this zone are defined at ng.telekom.net.
NS records for this zone are defined at ng.telekom.net.
Question and response
Question
dig mailin.ng.telekom.net. NS
Answer
The response has no answer records.
Authority
ng.telekom.net. 900 SOA ns-550.awsdns-04.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0