Apex domains cannot have CNAME records.
Question and response
Question
dig solitaservices.fi. NS
Answer
solitaservices.fi. 5 NS ns-322.awsdns-40.com.
solitaservices.fi. 5 NS ns-1574.awsdns-04.co.uk.
solitaservices.fi. 5 NS ns-1055.awsdns-03.org.
solitaservices.fi. 5 NS ns-784.awsdns-34.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0