Apex domains cannot have CNAME records.
Question and response
Question
dig baolamadera.com. NS
Answer
baolamadera.com. 5 NS ns-1926.awsdns-48.co.uk.
baolamadera.com. 5 NS ns-1420.awsdns-49.org.
baolamadera.com. 5 NS ns-204.awsdns-25.com.
baolamadera.com. 5 NS ns-686.awsdns-21.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0