Apex domains cannot have CNAME records.
Question and response
Question
dig cuaccess.net. NS
Answer
cuaccess.net. 5 NS NS2.SCNRESEARCH.COM.
cuaccess.net. 5 NS NS1.SCNRESEARCH.COM.
Authority
The response has no authority records.
Additional
ns1.SCNRESEARCH.com. 5 A 205.238.26.97
ns2.scnresearch.com. 5 A 216.128.96.24
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0