Apex domains cannot have CNAME records.
Question and response
Question
dig controlpanel.host. NS
Answer
controlpanel.host. 5 NS ns31.cloudns.net.
controlpanel.host. 5 NS ns32.cloudns.net.
controlpanel.host. 5 NS ns33.cloudns.net.
controlpanel.host. 5 NS ns34.cloudns.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0