fiber.by.multifiber.nl has no CNAME records.
Question and response
Question
dig fiber.by.multifiber.nl. NS
Answer
The response has no answer records.
Authority
multifiber.nl. 10140 SOA ns1.weservecluster.eu. hostmaster.multifiber.nl. 2026020400 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0