Quick answers about coverage, accuracy, privacy and using postcode.dog in shipping workflows.
Is postcode.dog free?
Yes. Lookup, reverse lookup, batch checks and guides are free to use. If a paid feature is introduced, it will be clearly marked.
Where does the data come from?
We combine GeoNames (CC BY 4.0), OpenStreetMap, public postal sources and carrier or platform documentation. We are not an official postal authority. See the Data page for sources and licences.
Why is a post code or place missing?
Coverage varies by country. Some countries publish only partial data, and some datasets stop at outcode, FSA or province level. If you find a gap, email support@postcode.dog with the country, code and place.
Does the UK have full post codes?
Yes for Great Britain: we include full post codes such as SW1A 1AA from OS Code-Point Open, published under the Open Government Licence. Northern Ireland (BT post codes) is still outcode-only because Code-Point Open does not cover it. We store post codes and coordinates, not street addresses.
Is the data official and guaranteed?
No. Data is for reference and may be incomplete or out of date. Always confirm critical addresses, customs data and label formats with the postal authority, carrier or platform before shipping.
Do you store my searches or addresses?
We do not require an account and do not build user profiles. Queries are processed to return results; street addresses may be sent to a geocoding provider. See Privacy & Cookies for details and retention.
Can I use the results commercially?
You may use the service in your own business and shipping workflows, subject to the Terms of Service. You may not scrape, resell or redistribute the data as a competing database without written permission.
Can I check many post codes at once?
Yes. Use the Batch check tool. It validates a list and shows which codes match the expected format.
Is there a public API?
We do not currently offer a public API. For integration or volume requests, contact support@postcode.dog.
How do I report a wrong result?
Email support@postcode.dog with the country, post code, place, the result you saw and, if possible, a source that confirms the correct value. We review corrections and update the dataset when possible.