Apex domains cannot have CNAME records.
Question and response
Question
dig casadelcordoncentrocultural.net.do. NS
Answer
casadelcordoncentrocultural.net.do. 5 NS ns-407.awsdns-50.com.
casadelcordoncentrocultural.net.do. 5 NS ns-1416.awsdns-49.org.
casadelcordoncentrocultural.net.do. 5 NS ns-542.awsdns-03.net.
casadelcordoncentrocultural.net.do. 5 NS ns-1812.awsdns-34.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0