Every .dk domain that delegates its _acme-challenge name to 3c1c3d7b-d27b-4a79-b944-c87af7b6504c.acme.educant.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.