Apex domains cannot have CNAME records.
Question and response
Question
dig intenciscare.com. NS
Answer
intenciscare.com. 5 NS ns-1253.awsdns-28.org.
intenciscare.com. 5 NS ns-1519.awsdns-61.org.
intenciscare.com. 5 NS ns-6.awsdns-00.com.
intenciscare.com. 5 NS ns-163.awsdns-20.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0