Apex domains cannot have CNAME records.
Question and response
Question
dig spa268.com. NS
Answer
spa268.com. 5 NS ns-1796.awsdns-32.co.uk.
spa268.com. 5 NS ns-559.awsdns-05.net.
spa268.com. 5 NS ns-1584.awsdns-06.co.uk.
spa268.com. 5 NS ns-1870.awsdns-41.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0