Apex domains cannot have CNAME records.
Question and response
Question
dig body-and-soul.at. NS
Answer
body-and-soul.at. 5 NS ns1114.ui-dns.com.
body-and-soul.at. 5 NS ns1063.ui-dns.org.
body-and-soul.at. 5 NS ns1034.ui-dns.de.
body-and-soul.at. 5 NS ns1095.ui-dns.biz.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0