Every .dk domain that delegates its _acme-challenge name to 7eba9f4f-d239-44dc-8944-ae1e585bc1e2.acme-dns.deic.dk. 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.