Apex domains cannot have CNAME records.
Question and response
Question
dig sofor.fi. NS
Answer
sofor.fi. 5 NS dns6.cloudns.net.
sofor.fi. 5 NS dns5.cloudns.net.
sofor.fi. 5 NS dns1.cloudns.net.
sofor.fi. 5 NS dns2.cloudns.net.
Authority
The response has no authority records.
Additional
dns1.cloudns.net. 2 A 185.136.96.77
dns2.cloudns.net. 2 A 185.136.97.77
dns5.cloudns.net. 2 A 185.136.98.77
dns6.cloudns.net. 2 A 185.136.99.77
dns1.cloudns.net. 2 AAAA 2a06:fb00:1:0:0:0:1:77
dns2.cloudns.net. 2 AAAA 2a06:fb00:1:0:0:0:2:77
dns5.cloudns.net. 2 AAAA 2a06:fb00:1:0:0:0:3:77
dns6.cloudns.net. 2 AAAA 2a06:fb00:1:0:0:0:4:77
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0