mail.digistatecloud.nl has no CNAME records.
Question and response
Question
dig mail.digistatecloud.nl. NS
Answer
The response has no answer records.
Authority
digistatecloud.nl. 1670 SOA ns1.digistate.eu. hostmaster.digistatecloud.nl. 2026030101 3600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0