Apex domains cannot have CNAME records.
Question and response
Question
dig netoip.com. NS
Answer
netoip.com. 5 NS mrddns001.misterdomain.eu.
netoip.com. 5 NS mrddns004.misterdomain.eu.
netoip.com. 5 NS mrddns003.misterdomain.eu.
netoip.com. 5 NS mrddns002.misterdomain.eu.
Authority
The response has no authority records.
Additional
mrddns001.misterdomain.eu. 5 A 217.194.3.135
mrddns002.misterdomain.eu. 5 A 217.194.3.136
mrddns003.misterdomain.eu. 5 A 185.114.108.240
mrddns004.misterdomain.eu. 5 A 185.114.108.241
mrddns001.misterdomain.eu. 5 AAAA 2001:4b7e:2000:6:0:0:0:1
mrddns002.misterdomain.eu. 5 AAAA 2001:4b7e:2000:5:0:0:0:1
mrddns003.misterdomain.eu. 5 AAAA 2001:4ba0:ffa6:13b:2001:4ba0:ffa6:13b
mrddns004.misterdomain.eu. 5 AAAA 2001:4ba0:ffa6:14d:2001:4ba0:ffa6:14d
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0