Apex domains cannot have CNAME records.
Question and response
Question
dig cctcc.net.do. NS
Answer
cctcc.net.do. 5 NS ns-807.awsdns-36.net.
cctcc.net.do. 5 NS ns-1728.awsdns-24.co.uk.
cctcc.net.do. 5 NS ns-401.awsdns-50.com.
cctcc.net.do. 5 NS ns-1075.awsdns-06.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0