mail.trexler.at has no NS records.
NS records for this zone are defined at trexler.at.
NS records for this zone are defined at trexler.at.
Question and response
Question
dig mail.trexler.at. NS
Answer
The response has no answer records.
Authority
trexler.at. 3600 SOA ns.trexler.at. hostmaster.trexler.at. 2025122807 3600 1800 604800 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0