Apex domains cannot have CNAME records.
Question and response
Question
dig cl.hnc.cl. NS
Answer
cl.hnc.cl. 5 NS ns2.ip-54-39-221.net.
cl.hnc.cl. 5 NS ns1.ip-54-39-221.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0