mail.geant.net has no NS records.
NS records for this zone are defined at geant.net.
NS records for this zone are defined at geant.net.
Question and response
Question
dig prod-nomad-ingress-vip.geant.org. NS
Answer
The response has no answer records.
Authority
geant.org. 900 SOA grid01.geant.net. hostmaster.transip.nl. 2017051522 3600 7200 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0