Apex domains cannot have CNAME records.
Question and response
Question
dig roycerun.com. NS
Answer
roycerun.com. 5 NS ns-825.awsdns-39.net.
roycerun.com. 5 NS ns-44.awsdns-05.com.
roycerun.com. 5 NS ns-137.awsdns-17.com.
roycerun.com. 5 NS ns-210.awsdns-26.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0