Apex domains cannot have CNAME records.
Question and response
Question
dig get.no. NS
Answer
get.no. 5 NS ns01.get.no.
get.no. 5 NS ns02.get.no.
Authority
The response has no authority records.
Additional
ns01.get.no. 5 A 84.208.20.104
ns02.get.no. 5 A 84.208.20.102
ns01.get.no. 5 AAAA 2a02:fe0:1:2:1:0:1:104
ns02.get.no. 5 AAAA 2a02:fe0:1:2:1:0:1:102
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0