Apex domains cannot have CNAME records.
Question and response
Question
dig eyevip.swiss. NS
Answer
eyevip.swiss. 1 NS ns-970.awsdns-57.net.
eyevip.swiss. 1 NS ns-376.awsdns-47.com.
eyevip.swiss. 1 NS ns-1841.awsdns-38.co.uk.
eyevip.swiss. 1 NS ns-1048.awsdns-03.org.
Authority
The response has no authority records.
Additional
ns-376.awsdns-47.com. 2 A 205.251.193.120
ns-970.awsdns-57.net. 2 A 205.251.195.202
ns-1048.awsdns-03.org. 2 A 205.251.196.24
ns-1841.awsdns-38.co.uk. 2 A 205.251.199.49
ns-376.awsdns-47.com. 2 AAAA 2600:9000:5301:7800:0:0:0:1
ns-970.awsdns-57.net. 2 AAAA 2600:9000:5303:ca00:0:0:0:1
ns-1048.awsdns-03.org. 2 AAAA 2600:9000:5304:1800:0:0:0:1
ns-1841.awsdns-38.co.uk. 2 AAAA 2600:9000:5307:3100:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0