The Natural Area Coding System is a geodetic system that has generated code called Natural Area Code (NAC) to unify the representations of geographic coordinates, area codes, street addresses, postal codes, map grids and property identifiers of every location or area in the world, and make the information from all maps, GPS receivers and location based services and products connected, efficient and universal.
The NAC Real-time Conversion API can help web sites obtain the geocode of every location on the planet, no matter whether the location has street address or not.
The service can be accessed through SOAP web service or REST web service. The REST web service can also return in either XML or JSON format.
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So far, we don't have a record of any changes to this API