Apex domains cannot have CNAME records.
Question and response
Question
dig ybaca.net. NS
Answer
ybaca.net. 5 NS ns-1001.awsdns-61.net.
ybaca.net. 5 NS ns-1154.awsdns-16.org.
ybaca.net. 5 NS ns-1602.awsdns-08.co.uk.
ybaca.net. 5 NS ns-2.awsdns-00.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0