Apex domains cannot have CNAME records.
Question and response
Question
dig nodesecure.eu. NS
Answer
nodesecure.eu. 5 NS any4.nodesecure.info.
nodesecure.eu. 5 NS any2.nodesecure.de.
nodesecure.eu. 5 NS any1.nodesecure.com.
nodesecure.eu. 5 NS any3.nodesecure.eu.
Authority
The response has no authority records.
Additional
any3.nodesecure.eu. 5 A 185.132.35.251
any3.nodesecure.eu. 5 AAAA 2607:f1c0:fe:53:185:132:35:251
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0