Apex domains cannot have CNAME records.
Question and response
Question
dig auroradns.eu. NS
Answer
auroradns.eu. 5 NS ns043.auroradns.info.
auroradns.eu. 5 NS ns042.auroradns.nl.
auroradns.eu. 5 NS ns041.auroradns.eu.
Authority
The response has no authority records.
Additional
ns041.auroradns.eu. 5 A 185.95.31.236
ns041.auroradns.eu. 5 AAAA 2a00:f10:402:781:1c00:89ff:fe00:2597
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0