ns3.internex.at has no CNAME records.
Question and response
Question
dig ns3.internex.at. NS
Answer
The response has no answer records.
Authority
internex.at. 10800 SOA ns1.internex.at. info.internex.at. 2026011512 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0