Apex domains cannot have CNAME records.
Question and response
Question
dig redpoints.com. NS
Answer
redpoints.com. 5 NS dns100.ovh.net.
redpoints.com. 5 NS ns100.ovh.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0