Apex domains cannot have CNAME records.
Question and response
Question
dig developkeyword.com. NS
Answer
developkeyword.com. 3 NS ns-586.awsdns-09.net.
developkeyword.com. 3 NS ns-1423.awsdns-49.org.
developkeyword.com. 3 NS ns-351.awsdns-43.com.
developkeyword.com. 3 NS ns-925.awsdns-51.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0