Apex domains cannot have CNAME records.
Question and response
Question
dig mi-hijo.info. NS
Answer
mi-hijo.info. 5 NS ns1.mi-hijo.info.
mi-hijo.info. 5 NS ns2.mi-hijo.info.
Authority
The response has no authority records.
Additional
ns1.mi-hijo.info. 5 A 169.197.143.234
ns2.mi-hijo.info. 5 A 169.197.143.164
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0