Apex domains cannot have CNAME records.
Question and response
Question
dig evard.ch. NS
Answer
evard.ch. 5 NS ns2.evard.ch.
evard.ch. 5 NS ns1.evard.ch.
Authority
The response has no authority records.
Additional
ns1.evard.ch. 5 A 213.142.160.139
ns2.evard.ch. 5 A 213.142.160.138
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0