Apex domains cannot have CNAME records.
Question and response
Question
dig ciproi.com. NS
Answer
ciproi.com. 3 NS ns-516.awsdns-00.net.
ciproi.com. 3 NS ns-541.awsdns-03.net.
ciproi.com. 3 NS ns-551.awsdns-04.net.
ciproi.com. 3 NS ns-829.awsdns-39.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0