ns3.worldstream.net has no CNAME records.
Question and response
Question
dig ns3.worldstream.net. NS
Answer
The response has no answer records.
Authority
worldstream.net. 3303 SOA ns1.worldstream.nl. hostmaster.worldstream.nl. 2026022702 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0