The UPRN is a data point which many logistics services required to be able to complete accurate last mile delivery as it denotes the physical location of a specific property.
The UPRN is assigned by Ordnance Survey and is included in our Rooftop Geocodes product, which also provides exact latitude and longitude coordinates for UK properties.
You can find out more about Rooftop Geocodes here : https://fetchify.com/data-intelligence-tools/geocoding/