Apex domains cannot have CNAME records.
Question and response
Question
dig schebitz.name. NS
Answer
schebitz.name. 5 NS ns1.ns-serve.net.
schebitz.name. 5 NS ns2.ns-serve.net.
Authority
The response has no authority records.
Additional
ns1.ns-serve.net. 5 A 195.191.92.140
ns2.ns-serve.net. 5 A 195.191.93.140
ns1.ns-serve.net. 5 AAAA 2001:67c:2394:2:0:0:0:1001
ns2.ns-serve.net. 5 AAAA 2001:67c:2394:4:0:0:0:1001
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0