sonne.floppy.org has no CNAME records.
Question and response
Question
dig sonne.floppy.org. NS
Answer
The response has no answer records.
Authority
floppy.org. 4644 SOA theater.piekert.de. floppy.floppy.org. 2025110734 36000 3600 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0