Confirm Data Accuracy: Best Practices – German(DE)

Research involves verifying the data through an official source or 3 unofficial sources. Clearly unreliable sources should not be considered at all.

Use official resources like businesses’ official websites, national postal service websites, and government websites whenever possible (Guidelines section 2.1.1)

If you can’t verify the data correct or incorrect, rate Can’t Verify.

To give you some guidance, please see below some of the resources that Analysts from German (DE) market have reported to be helpful when performing research:

Helpful Map Applications:

Geoportal.de (map link: https://is.gd/MXtkQw?) > considered official source!
Openstreetmap (OSM) > OSM and Geoportal show property boundaries and

house numbers and are helpful for verifying that the Pin falls on the correct building

Google Maps
 

Helpful resources to research Name Accuracy:

In the rare case that a result business has no website or the result Name is different to the Name displayed on the website check the below:

Street Imagery (e.g. Street View or Image Search) for store front signs
Search Engine research: yelp results (limited!), yellow pages, phone directories, specialised pages like Jamedo (doctors), tripadvisor (hotels) etc.

Helpful resources to research Address Accuracy:

Official website/social media (always first step! – if the result address matches the official address, it is considered correct)
Search Engine research: yelp results (limited!), yellow pages, phone directories, specialised pages like Jamedo (doctors), tripadvisor (hotels) etc.

To research postal code:

Go to http://www.postdirekt.de/plzserver/ (official resource!) and search for the respective locality.
A list of the different sub-localities with postal codes is shown (verify if unique postal code exists!)
Click on “Straßen anzeigen”
Click on “Auf Karte anzeigen” (there is no direct way to get to the map)
The map shows the boundaries of all “PLZ-Gebiete” and can be used for all postal code research

Tip: Leave the map open while rating!

 

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