Apex domains cannot have CNAME records.
Question and response
Question
dig msfiber.net. NS
Answer
msfiber.net. 5 NS ddi-sdf1.msfiber.net.
msfiber.net. 5 NS ddi-ind1.msfiber.net.
Authority
The response has no authority records.
Additional
ddi-ind1.msfiber.net. 5 A 74.116.23.106
ddi-sdf1.msfiber.net. 5 A 74.116.20.35
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0