DHL Remote Areas List
The JSON file is created from the DHL Remote Area List
Current version is from the April 2020 PDF https://www.dhl.com/content/dam/downloads/g0/express/services/surcharges/dhl_express_remote_areas_id_id.pdf
- Preserve leading zeros
- Expand ranges, so
0010 - 0012actually yields 3 items:0010,0011and0012 - Key by ISO 3166-1 alpha-2 code
- Fix errors in the PDF published by DHL (e.g. Missing "NORWAY")