Every .dk domain that delegates its _acme-challenge name to b5885057-de14-4e46-bc7b-f9b0a1270b4c.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.