Apex domains cannot have CNAME records.
Question and response
Question
dig us-arctic-blast.com. NS
Answer
us-arctic-blast.com. 5 NS ns-1448.awsdns-53.org.
us-arctic-blast.com. 5 NS ns-2029.awsdns-61.co.uk.
us-arctic-blast.com. 5 NS ns-85.awsdns-10.com.
us-arctic-blast.com. 5 NS ns-1452.awsdns-53.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0