Apex domains cannot have CNAME records.
Question and response
Question
dig presstige.at. NS
Answer
presstige.at. 5 NS leikotha.empirion.at.
presstige.at. 5 NS aerfalle.empirion.at.
presstige.at. 5 NS elithra.empirion.at.
Authority
The response has no authority records.
Additional
elithra.empirion.at. 5 A 116.203.79.104
aerfalle.empirion.at. 5 A 80.245.192.68
leikotha.empirion.at. 5 A 80.245.192.69
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0