Every .dk domain that delegates its _acme-challenge name to 6fc8c5c3-70a9-4e9c-a892-66c695a967a9.stackpath-tls.com. 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.