Every .dk domain that delegates its _acme-challenge name to d05a6fa6-2554-4a2c-b885-cf9d8cd48c2b.acmedns.dlx.hosting. Such CNAMEs hand DNS-01 certificate validation to a shared service, so this list shows who issues TLS certificates through it. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.