Information provided according to Sec. 5 German Telemedia Act (TMG):

Thorsten Zierenberg
Proprietor (licensed agent according §34c GeWO)
Aachener Str. 40-44
50674 Köln


Telephone: 0221 /2584000


VAT Id number according to Sec. 27 a German Value Added Tax Act:

Supervising authority:

License (according §34c GeWO) issued by Stadt Köln

Willy-Brandt-Platz 3
50679 Köln

Information concerning professional indemnity insurance:

Name and residence of insurer:
Hiscox Europe Underwriting Limited
Zweigniederlassung für die Bundesrepublik Deutschland
Arnulfstrasse 31
80636 München

Scope of insurance: Bundesrepublik Deutschland

Responsible for contents acc. to Sec. 55, para. 2 German Federal Broadcasting Agreement (RstV):

Thorsten Zierenberg
Aachener Str. 40-44
50674 Köln

Dispute resolution

The European Commission provides a platform for online dispute resolution (OS):
Please find our email in the impressum/legal notice.

We do not take part in online dispute resolutions at consumer arbitration boards.


Kai-Peter Breiholdt

Littenstraße 10, 10179 Berlin

Liability for Contents

As a service provider, we are liable for our own content on these pages in accordance with § 7 Section 1 of the German Telemedia Act (TMG). However, according to §§ 8 to 10 TMG we as a service provider are not obligated to permanently monitor transmitted or stored external information or to search for evidence indicating illegal activities.

General legal obligations to remove information or to block the use of information remain unchallenged.

A liability in this regard, however, is only possible from the time of knowledge about a specific violation of the law.

Illegal contents will be removed immediately at the time we get knowledge of them.

Liability for Links

Our offer includes links to external third party websites.

We have no influence on the contents of these websites, therefore we cannot assume any liability for these external contents. Providers or administrators of linked websites are always responsible for their own contents.

The linked websites were checked for possible violations of law at the time of the establishment of the link. Illegal contents were not detected at the time of the linking.

A permanent monitoring of the contents of linked websites, however, cannot be imposed without reasonable indications that there has been a violation of law. Illegal links will be removed immediately at the time we get knowledge of them.


The contents and compilations published on these websites by the providers are subject to German copyright laws. The reproduction, editing, distribution as well as the use of any kind outside the scope of the copyright law require a written permission of the author or originator. Downloads and copies of these websites are permitted for private use only.
The commercial use of our contents without permission of the originator is prohibited.

Copyright laws of third parties are respected in cases where the contents on these websites do not originate from the provider. Contributions of third parties on this site are indicated as such. However, if you notice any violations of copyright law, please inform us. Such contents will be removed immediately.