Apex domains cannot have CNAME records.
Question and response
Question
dig nohats.ca. NS
Answer
nohats.ca. 5 NS ns2.foobar.fi.
nohats.ca. 5 NS ns0.nohats.ca.
nohats.ca. 5 NS ns1.nohats.ca.
Authority
The response has no authority records.
Additional
ns0.nohats.ca. 5 A 193.110.157.102
ns1.nohats.ca. 5 A 149.56.110.74
ns0.nohats.ca. 5 AAAA 2a03:6000:1004:1:0:0:0:102
ns1.nohats.ca. 5 AAAA 2607:5300:201:3000:0:0:0:2461
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0