ns2.virtu.nl has no CNAME records.
Question and response
Question
dig ns2.virtu.nl. NS
Answer
The response has no answer records.
Authority
virtu.nl. 60 SOA adns1.virtu.nl. hostmaster.virtu.nl. 2025112906 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0