Apex domains cannot have CNAME records.
Question and response
Question
dig triada.net.do. NS
Answer
triada.net.do. 5 NS ns-101.awsdns-12.com.
triada.net.do. 5 NS ns-1544.awsdns-01.co.uk.
triada.net.do. 5 NS ns-1314.awsdns-36.org.
triada.net.do. 5 NS ns-684.awsdns-21.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0