ns2.linktelecom.com.py has no CNAME records.
Question and response
Question
dig ns2.linktelecom.com.py. NS
Answer
The response has no answer records.
Authority
linktelecom.com.py. 3408 SOA ns1.linktelecom.com.py. hostmaster.linktelecom.com.py. 738678144 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0