Apex domains cannot have CNAME records.
Question and response
Question
dig powersferryumc.com. NS
Answer
powersferryumc.com. 5 NS ns-1972.awsdns-54.co.uk.
powersferryumc.com. 5 NS ns-1608.awsdns-09.co.uk.
powersferryumc.com. 5 NS ns-1061.awsdns-04.org.
powersferryumc.com. 5 NS ns-1564.awsdns-03.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0