Apex domains cannot have CNAME records.
Question and response
Question
dig YACHAY.PE. NS
Answer
YACHAY.PE. 5 NS NS2.RCP.NET.PE.
YACHAY.PE. 5 NS NS.RCP.NET.PE.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0