Apex domains cannot have CNAME records.
Question and response
Question
dig rbwoerheide.com. NS
Answer
rbwoerheide.com. 5 NS ns1.rbwoerheide.com.
rbwoerheide.com. 5 NS ns2.rbwoerheide.com.
Authority
The response has no authority records.
Additional
ns1.rbwoerheide.com. 5 A 104.206.30.66
ns2.rbwoerheide.com. 5 A 104.140.63.166
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0