Apex domains cannot have CNAME records.
Question and response
Question
dig bfi0.com. NS
Answer
bfi0.com. 3 NS a16-66.akam.net.
bfi0.com. 3 NS a8-64.akam.net.
bfi0.com. 3 NS a1-108.akam.net.
bfi0.com. 3 NS a9-65.akam.net.
bfi0.com. 3 NS a11-65.akam.net.
bfi0.com. 3 NS a24-67.akam.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0