SIX Payment Services (Germany) GmbH
- Langenhorner Chaussee 92-94, 22415 Hamburg
- +49 (40) 3259670
- +49 (40) 325967-111
PPI AG Informationstechnologie
- Peter-Müller-Straße 10, 40468 Düsseldorf
- +49 (211) 97552-0
- +49 (211) 97552-5111
Bank-Media GmbH
- Bismarckallee 9, 79098 Freiburg
- +49 (151) 40787072
- +49 (761) 20854128
Materna Information & Communications SE
- Robert-Schuman-Str. 20, 44263 Dortmund
- +49 (231) 559900
- +49 (231) 5599-100