dns2.jm-data.at has no CNAME records.
Question and response
Question
dig dns2.jm-data.at. NS
Answer
The response has no answer records.
Authority
jm-data.at. 3600 SOA dns1.jm-data.at. office.jm-data.at. 2026012001 300 300 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0