a.nic.cl has no CNAME records.
Question and response
Question
dig a.nic.cl. NS
Answer
The response has no answer records.
Authority
nic.cl. 592 SOA a.nic.cl. dnsadmin.nic.cl. 2026022201 21600 7200 2592000 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0