You can contact us via e-mail at Opens window for sending or via regular mail at the following address:

alta4 AG 
im Posthof am Kornmarkt
Fleischstr. 57
D-54290 Trier

Fon: +49.651.96626.0
Fax: +49.651.96626.26
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Website Owner ( Geoinformatik AG
CEO: Ole Seidel
Chairman of the board: Bernhard Mohr
Court of Registration: Amtsgericht Wittlich, HRB 4640
Value-added tax identification number: VAT ID No.: DE 219145740

Support for our maintenance customers

You can get in contact with our support service by phone via:

Or send an email with your request to: Opens window for sending