Apex domains cannot have CNAME records.
Question and response
Question
dig brant.ca. NS
Answer
brant.ca. 5 NS polka.brant.ca.
brant.ca. 5 NS micro.brant.ca.
Authority
The response has no authority records.
Additional
micro.brant.ca. 5 A 206.174.186.52
polka.brant.ca. 5 A 206.174.186.51
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0