- 11 Companies at the address Worringer Straße 25, 50668 Köln
- DOMICIL HOTELMANAGEMENTGESELLSCHAFT mbH- Köln - Hotels and accommodation (I55) 
- Factoring Capital GmbH- Köln - Holdings and financial services (K64) 
- HumanProtect Consulting GmbH- Köln - Management and consultancy services (M70) 
- RBK Business Network GmbH- Köln - Association & club (S94) 
- RCR Revision und Treuhand GmbH Buchprüfungsgesellschaft- Köln - Auditors, tax consultants, lawyers (M69) 
- RCR Steuerberatungsgesellschaft mbH- Köln - Auditors, tax consultants, lawyers (M69) 
- Reihe 7 UG (haftungsbeschränkt) & Co. KG- Köln 
- Reihe 7 Verwaltungs UG (haftungsbeschränkt)- Köln - Holdings and financial services (K64) 
- SAM Finanzholding GmbH- Köln - Holdings and financial services (K64) 
- TTL Tourism Tax & Law Rechtsanwaltsgesellschaft mbH- Köln - Auditors, tax consultants, lawyers (M69) 
- proxi. GmbH- Köln - Management and consultancy services (M70)