Apex domains cannot have CNAME records.
Question and response
Question
dig palaciodeanglona.com. NS
Answer
palaciodeanglona.com. 3 NS ns-1351.awsdns-40.org.
palaciodeanglona.com. 3 NS ns-690.awsdns-22.net.
palaciodeanglona.com. 3 NS ns-81.awsdns-10.com.
palaciodeanglona.com. 3 NS ns-1241.awsdns-27.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0