ns2.DataNetworks.CL has no CNAME records.
Question and response
Question
dig ns2.DataNetworks.CL. NS
Answer
The response has no answer records.
Authority
DataNetworks.CL. 5347 SOA ns1.DataNetworks.CL. root.raid-dnw.dnw.CL. 2026020201 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0