Every .dk domain that delegates its _acme-challenge name to ed5e44c5-bbd5-4988-bd5a-493e780c5820.prod.cluster.gcpbe.upapps.io. 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.