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Search by UDPRN

UDPRNs are an eight digit unique numeric code (e.g. 25962203) for any premise on the Postcode Address File. It's essentially a unique identifier for every address in the UK that Royal Mail has in its database.

To test your implementation of our API we have a range of test UDPRNs that yield both successful and unsuccessful responses to your request.

Example

https://api.ideal-postcodes.co.uk/v1/udprn/[UDPRN]?api_key=iddqd
https://api.ideal-postcodes.co.uk/v1/udprn/23747771?api_key=iddqd