Every .dk domain that delegates its _acme-challenge name to 768a98c8-a502-4696-bb13-4f0cdcc6b85d.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.