mail.lacnic.NET has no CNAME records.
Question and response
Question
dig mail.lacnic.NET. NS
Answer
The response has no answer records.
Authority
lacnic.net. 564 SOA NS.LACNIC.NET. Hostmaster.LACNIC.NET. 2026022302 7200 3600 648736 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0