vmi602362.contaboserver.net has no CNAME records.
Question and response
Question
dig vmi602362.contaboserver.net. NS
Answer
The response has no answer records.
Authority
contaboserver.net. 1943 SOA ns1.contabo.net. hostmaster.contabo.de. 1771722781 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0