Apex domains cannot have CNAME records.
Question and response
Question
dig worthcharter.com. NS
Answer
worthcharter.com. 5 NS ns-1461.awsdns-54.org.
worthcharter.com. 5 NS ns-878.awsdns-45.net.
worthcharter.com. 5 NS ns-361.awsdns-45.com.
worthcharter.com. 5 NS ns-1188.awsdns-20.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0