Every .dk domain that delegates its _acme-challenge name to 1e2741ae-907a-444f-b651-19668f7f06cf.acme.asjsoftware.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.