Apex domains cannot have CNAME records.
Question and response
Question
dig secserverpros.com. NS
Answer
secserverpros.com. 3 NS dns1.secserverpros.com.
secserverpros.com. 3 NS dns2.secserverpros.com.
Authority
The response has no authority records.
Additional
dns1.secserverpros.com. 3 A 139.99.116.158
dns2.secserverpros.com. 3 A 74.48.34.33
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0