mx3.braintrust.at has no NS records.
NS records for this zone are defined at braintrust.at.
NS records for this zone are defined at braintrust.at.
Question and response
Question
dig mx3.braintrust.at. NS
Answer
The response has no answer records.
Authority
braintrust.at. 3600 SOA dns1.braintrust.at. hostmaster.braintrust.at. 2023102401 600 300 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0