Apex domains cannot have CNAME records.
Question and response
Question
dig v2.whc.ca. NS
Answer
v2.whc.ca. 4 NS ns1.whc.ca.
v2.whc.ca. 4 NS ns2.whc.ca.
v2.whc.ca. 4 NS ns3.whc.ca.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0