Apex domains cannot have CNAME records.
Question and response
Question
dig centric.net. NS
Answer
centric.net. 5 NS ns.centric.net.
centric.net. 5 NS ns1.centric.net.
Authority
The response has no authority records.
Additional
ns1.centric.net. 5 A 69.51.66.2
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0