Every .dk domain that delegates its _acme-challenge name to 865f8aa0-e170-4080-aed4-39eb745fbf4f.acmeauth.lithosting.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.