Every .dk domain that delegates its _acme-challenge name to e393d668-0e81-4558-972a-e78612e9ccf8.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.