LACNIC.AUTHDNS.RIPE.NET has no CNAME records.
Question and response
Question
dig LACNIC.AUTHDNS.RIPE.NET. NS
Answer
The response has no answer records.
Authority
ripe.net. 1701 SOA manus.authdns.ripe.net. dns.ripe.net. 1771631722 3600 600 864000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0