Danish municipalities and regions are outdated
When searching for Danish addresses the results for both municipalities and regions seem to follow the pre 2007 standard as described in https://en.wikipedia.org/wiki/ISO_3166-2:DK E.g. the municipality of Nordborg was merged with Sønderborg and the region of Sønderjylland was merged with others to form Southern Jutland.
Thank you Sean for your feedback! We will follow up.