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The Danish Register of Underground Cable Owners (LER) is an organization tasked with preventing accidental damage to underground utility cables. To this end, they maintain a registry of all utility cable owners in a given area. Any companies or individuals planning to dig are legally obliged to submit information requests to the LER. In return, they receive a receipt showing the digging area and listing utility owners with cables in the area. The LER API allows users to submit requests and retrieve information receipts programmatically. The LER website is provided entirely in Danish, except for one informational page that is given in English.