Apex domains cannot have CNAME records.
Question and response
Question
dig eyevip.ch. NS
Answer
eyevip.ch. 5 NS ns-1786.awsdns-31.co.uk.
eyevip.ch. 5 NS ns-1299.awsdns-34.org.
eyevip.ch. 5 NS ns-340.awsdns-42.com.
eyevip.ch. 5 NS ns-702.awsdns-23.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0