Apex domains cannot have CNAME records.
Question and response
Question
dig i-baboo.com. NS
Answer
i-baboo.com. 5 NS ns-743.awsdns-28.net.
i-baboo.com. 5 NS ns-876.awsdns-45.net.
i-baboo.com. 5 NS ns-17.awsdns-02.com.
i-baboo.com. 5 NS ns-583.awsdns-08.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0