Every .dk domain that delegates its _acme-challenge name to 75c5bdc5-151c-433f-a585-a27fd2c4c997.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.