Apex domains cannot have CNAME records.
Question and response
Question
dig jcwdns.us. NS
Answer
jcwdns.us. 5 NS ns2.jcwdns.us.
jcwdns.us. 5 NS ns1.jcwdns.us.
Authority
The response has no authority records.
Additional
ns1.jcwdns.us. 5 A 41.185.8.22
ns2.jcwdns.us. 5 A 41.185.8.21
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0