Every .dk domain that delegates its _acme-challenge name to a8eef6a0e453dbbacde61df2616cf5ea.ff93ceb79774ccbec7c71fa2ee3312a8.t0758607001686653342.sectigo.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.