Apex domains cannot have CNAME records.
Question and response
Question
dig teinvita.cl. NS
Answer
teinvita.cl. 5 NS ns-1055.awsdns-03.org.
teinvita.cl. 5 NS ns-1574.awsdns-04.co.uk.
teinvita.cl. 5 NS ns-369.awsdns-46.com.
teinvita.cl. 5 NS ns-705.awsdns-24.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0