Every .dk domain that delegates its _acme-challenge name to e962e1a7-31a2-4658-ad86-501c433a3caa.acmedns.infinityfree.net. 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.