Apex domains cannot have CNAME records.
Question and response
Question
dig sendcockpit.com. NS
Answer
sendcockpit.com. 5 NS dns1.netways.de.
sendcockpit.com. 5 NS dns2.netways.de.
Authority
The response has no authority records.
Additional
dns1.netways.de. 5 A 185.11.252.65
dns2.netways.de. 5 A 88.198.254.244
dns1.netways.de. 5 AAAA 2a02:ed80:7f:0:0:0:0:0
dns2.netways.de. 5 AAAA 2a01:4f8:d0:5900:0:0:0:3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0