_spf.dk-hostmaster.dk has no CNAME records.
Question and response
Question
dig _spf.dk-hostmaster.dk. NS
Answer
The response has no answer records.
Authority
dk-hostmaster.dk. 358 SOA auth01.ns.dk-hostmaster.dk. tech.punktum.dk. 2026022410 14400 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0