Every .dk domain that delegates its _acme-challenge name to 6kjdq6m6rannumwlvamj2kt4z2n3qnmtepzgdwmt3c6wcpng5ygq.validation.platform.sh. 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.