Every .dk domain that delegates its _acme-challenge name to 16036f19-2cc5-492c-908d-eb3dd6152450.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.