Apex domains cannot have CNAME records.
Question and response
Question
dig cyberfusion.cloud. NS
Answer
cyberfusion.cloud. 5 NS nsauth2.cyberfusion.nu.
cyberfusion.cloud. 5 NS nsauth1.cyberfusion.nl.
cyberfusion.cloud. 5 NS nsauth0.cyberfusion.nl.
Authority
The response has no authority records.
Additional
nsauth0.cyberfusion.nl. 5 A 185.233.173.153
nsauth1.cyberfusion.nl. 5 A 185.233.173.150
nsauth2.cyberfusion.nu. 5 A 91.195.80.142
nsauth0.cyberfusion.nl. 5 AAAA 2a0c:eb00:0:f10:185:233:173:153
nsauth1.cyberfusion.nl. 5 AAAA 2a0c:eb00:0:f10:185:233:173:150
nsauth2.cyberfusion.nu. 5 AAAA 2a00:1ca8:15:0:0:0:0:3c
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0