Apex domains cannot have CNAME records.
Question and response
Question
dig treasuresinoils.com. NS
Answer
treasuresinoils.com. 5 NS ns-1828.awsdns-36.co.uk.
treasuresinoils.com. 5 NS ns-303.awsdns-37.com.
treasuresinoils.com. 5 NS ns-767.awsdns-31.net.
treasuresinoils.com. 5 NS ns-1141.awsdns-14.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0