Apex domains cannot have CNAME records.
Question and response
Question
dig ronalutime.com. NS
Answer
ronalutime.com. 5 NS ns-1485.awsdns-57.org.
ronalutime.com. 5 NS ns-2019.awsdns-60.co.uk.
ronalutime.com. 5 NS ns-1865.awsdns-41.co.uk.
ronalutime.com. 5 NS ns-2044.awsdns-63.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0