Apex domains cannot have CNAME records.
Question and response
Question
dig armandorigau.com. NS
Answer
armandorigau.com. 5 NS ns-141.awsdns-17.com.
armandorigau.com. 5 NS ns-715.awsdns-25.net.
armandorigau.com. 5 NS ns-1092.awsdns-08.org.
armandorigau.com. 5 NS ns-1903.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0