Apex domains cannot have CNAME records.
Question and response
Question
dig hotelsantacatalinacoruna.com. NS
Answer
hotelsantacatalinacoruna.com. 5 NS ns1.hotelsantacatalinacoruna.com.
hotelsantacatalinacoruna.com. 5 NS ns2.hotelsantacatalinacoruna.com.
Authority
The response has no authority records.
Additional
ns1.hotelsantacatalinacoruna.com. 5 A 199.188.236.13
ns2.hotelsantacatalinacoruna.com. 5 A 142.44.136.25
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0