Apex domains cannot have CNAME records.
Question and response
Question
dig ludabrake.com. NS
Answer
ludabrake.com. 4 NS ns-1187.awsdns-20.org.
ludabrake.com. 4 NS ns-1967.awsdns-53.co.uk.
ludabrake.com. 4 NS ns-139.awsdns-17.com.
ludabrake.com. 4 NS ns-618.awsdns-13.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0