Apex domains cannot have CNAME records.
Question and response
Question
dig hrworx.com. NS
Answer
hrworx.com. 5 NS ns-821.awsdns-38.net.
hrworx.com. 5 NS ns-1679.awsdns-17.co.uk.
hrworx.com. 5 NS ns-464.awsdns-58.com.
hrworx.com. 5 NS ns-1051.awsdns-03.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0