lb.fallback.werkonline.nu has no CNAME records.
Question and response
Question
dig lb.fallback.werkonline.nu. NS
Answer
The response has no answer records.
Authority
werkonline.nu. 1955 SOA ns3.kpn.net. zonemaster.kpn.com. 2023030702 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0