Apex domains cannot have CNAME records.
Question and response
Question
dig messagecube.it. NS
Answer
messagecube.it. 5 NS dns9.interbusiness.it.
messagecube.it. 5 NS dns10.interbusiness.it.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0