ns3.comunitel.net has no CNAME records.
Question and response
Question
dig ns3.comunitel.net. NS
Answer
The response has no answer records.
Authority
comunitel.net. 379 SOA ns1.comunitel.net. hostmaster.comunitel.net. 2024112900 43200 7200 2419200 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0