Apex domains cannot have CNAME records.
Question and response
Question
dig mobifi.ca. NS
Answer
mobifi.ca. 5 NS pdns104.ultradns.com.
mobifi.ca. 5 NS pdns104.ultradns.biz.
mobifi.ca. 5 NS pdns104.ultradns.org.
mobifi.ca. 5 NS pdns104.ultradns.net.
Authority
The response has no authority records.
Additional
pdns104.ultradns.biz. 3 A 156.154.66.104
pdns104.ultradns.com. 3 A 156.154.64.104
pdns104.ultradns.net. 3 A 156.154.65.104
pdns104.ultradns.org. 3 A 156.154.67.104
pdns104.ultradns.biz. 3 AAAA 2610:a1:1015:0:0:0:0:8c
pdns104.ultradns.com. 3 AAAA 2001:502:f3ff:0:0:0:0:8c
pdns104.ultradns.net. 3 AAAA 2610:a1:1014:0:0:0:0:8c
pdns104.ultradns.org. 3 AAAA 2001:502:4612:0:0:0:0:8c
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0