I am aware that the premium geocoding data for the UK is OS AddressBase. How do I found out what data is behind the service in USA or Germany, for example?
Hi John, what we done in the API service is always provide the best-of-the-best datasets we can provide.
With geocoding we always recommend to our geocoding customers to run a street geocoding dataset as the base as these provide 'coverage' and then to add address points to it to provide 'address integrity' and certainty about the 'positional accuracy'. And in the API we have taken our own advice.
In the vast majority of counties delivering the "best" is easy because we have a single street based geocoding dataset or a single street plus a single address point dataset. There are a small number of anomalies that break this rule:
Now I suspect John, because I know you so well, you didn't want this level of detail. You actually want to know who the data vendors are the each country. And as you can tell from my answer above, it's likely to change and be dynamic. You can check out the quarterly Spectrum Global Geocoding Module and Release Notes and it will give you the detail of what data we have available. In January, with a fair wind and some good planning, I am hoping to have a website available that describes what is available. And you have now given me a new requirement to identify what is actually within the API's.
So finally, to answer the specific question, USA is HERE Streets + PB Master Location Data (MLD). Germany is TomTom Street + TomTom Points.
Give us a shout next time you're back in Blighty...