Apex domains cannot have CNAME records.
Question and response
Question
dig phishme.ca. NS
Answer
phishme.ca. 5 NS ns-938.awsdns-53.net.
phishme.ca. 5 NS ns-1257.awsdns-29.org.
phishme.ca. 5 NS ns-1741.awsdns-25.co.uk.
phishme.ca. 5 NS ns-101.awsdns-12.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0