Apex domains cannot have CNAME records.
Question and response
Question
dig kssonline.fi. NS
Answer
kssonline.fi. 2 NS ns3.printcom.fi.
kssonline.fi. 2 NS ns.pcom.fi.
kssonline.fi. 2 NS ns1.pcom.fi.
kssonline.fi. 2 NS ns4.printcom.fi.
Authority
The response has no authority records.
Additional
ns.pcom.fi. 2 A 205.251.192.46
ns1.pcom.fi. 2 A 205.251.194.143
ns3.printcom.fi. 2 A 205.251.199.190
ns4.printcom.fi. 2 A 205.251.197.78
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0