dns2w.brunner.at has no NS records.
NS records for this zone are defined at brunner.at.
NS records for this zone are defined at brunner.at.
Question and response
Question
dig dns2w.brunner.at. NS
Answer
The response has no answer records.
Authority
brunner.at. 3600 SOA dns1w.brunner.at. admin.brunner.at. 772632233 10800 3600 605000 38400
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0