Apex domains cannot have CNAME records.
Question and response
Question
dig wind.ca. NS
Answer
wind.ca. 5 NS ns2.wind.ca.
wind.ca. 5 NS azns1.freedommobile.ca.
wind.ca. 5 NS ns1.wind.ca.
Authority
The response has no authority records.
Additional
ns1.wind.ca. 5 A 74.115.192.251
ns2.wind.ca. 5 A 74.115.192.252
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0