s910.whserver.nl has no CNAME records.
Question and response
Question
dig s910.whserver.nl. NS
Answer
The response has no answer records.
Authority
whserver.nl. 1000 SOA intention.ns01.nl. hostmaster.intention.nl. 2025103131 3600 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0