Apex domains cannot have CNAME records.
Question and response
Question
dig comedia.it. NS
Answer
comedia.it. 5 NS moist.comedia.it.
comedia.it. 5 NS wonse.comedia.it.
comedia.it. 5 NS drumknott.comedia.it.
Authority
The response has no authority records.
Additional
moist.comedia.it. 5 A 77.93.255.38
wonse.comedia.it. 5 A 217.171.37.56
drumknott.comedia.it. 5 A 77.93.255.39
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0