mails1.herold.at has no NS records.
NS records for this zone are defined at herold.at.
NS records for this zone are defined at herold.at.
Question and response
Question
dig mails1.herold.at. NS
Answer
The response has no answer records.
Authority
herold.at. 3600 SOA dns2.telekom.at. domainadmin.a1.net. 2026030400 10800 3600 1814400 3600
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0