Apex domains cannot have CNAME records.
Question and response
Question
dig wifire.it. NS
Answer
wifire.it. 5 NS ns1.register.it.
wifire.it. 5 NS ns2.register.it.
Authority
The response has no authority records.
Additional
ns1.register.it. 3 A 81.88.61.2
ns2.register.it. 3 A 195.7.227.1
ns1.register.it. 3 AAAA 2a01:8100:2911:0:0:2:184:2
ns2.register.it. 3 AAAA 2a00:13b0:2:0:0:0:227:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0