Apex domains cannot have CNAME records.
Question and response
Question
dig epriority.com. NS
Answer
epriority.com. 5 NS inetdns.ssnc.cloud.
epriority.com. 5 NS inetdns1.ssnc.cloud.
Authority
The response has no authority records.
Additional
inetdns.ssnc.cloud. 2 A 198.41.223.237
inetdns1.ssnc.cloud. 2 A 162.159.10.220
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0