Every .dk domain that delegates its _acme-challenge name to 6cf2f3d7-2d6d-4d34-b64e-4b789cca874f.auth.acme-dns.io. 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.