ip5b419961.dynamic.kabel-deutschland.de has no CNAME records.
Question and response
Question
dig ip5b419961.dynamic.kabel-deutschland.de. NS
Answer
The response has no answer records.
Authority
dynamic.kabel-deutschland.de. 1698 SOA ns01.registrar.kabel-deutschland.de. dns-admin.kabeldeutschland.de. 2015050602 10800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0