ns10.fca.uncu.edu.ar has no CNAME records.
Question and response
Question
dig ns10.fca.uncu.edu.ar. NS
Answer
The response has no answer records.
Authority
fca.uncu.edu.ar. 2993 SOA ns10.fca.uncu.edu.ar. root.fca.uncu.edu.ar.fca.uncu.edu.ar. 2026022303 28800 7200 604800 43200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0