*.heysender.dk has no CNAME records.
Question and response
Question
dig *.heysender.dk. NS
Answer
The response has no answer records.
Authority
heysender.dk. 262 SOA ns1.curanet.dk. hostmaster.curanet.dk. 2025011502 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0