Apex domains cannot have CNAME records.
Question and response
Question
dig hctc.com. NS
Answer
hctc.com. 5 NS ns1.hcc.net.
hctc.com. 5 NS ns1.hctc.com.
Authority
The response has no authority records.
Additional
ns1.hcc.net. 5 A 216.235.96.1
ns1.hctc.com. 5 A 216.235.100.1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0