Customers? Always welcome...

... but much better even - vice-versa.  That is to say, if companies value their service provider just as highly and look forward to productive long-term cooperation.  Our list includes customers who have appreciated our technology and services for many years already.  Even more so when we do this reliably and with pleasure!

Our customers include major listed corporations and innovative medium-sized companies. Banks and insurance firms, trade and industry as well as public authorities and research institutes count among these, also IT providers and carriers relying on us for reliable solutions to offer their customers.



Our customers

Public sector

  • Fritz-Haber-Institut
  • Universität Mannheim
  • Karlsruher Institut für Technologie (KIT)
  • OFD Magdeburg, Nürnberg, München
  • Fraunhofer-Gesellschaft

Health / Pharma

  • DRK-Blutspendedienst
  • Merck
  • Bitmarck
  • gkv informatik


  • DEVK
  • VHV
  • Hannover Rück
  • Techniker Krankenkasse

Carrier / Data Center / Cloud + IT Provider

  • T-Systems
  • Atos
  • QSC
  • msg services
  • 1&1 Versatel
  • M-net
  • IBM
  • WiTCOM
  • Netcologne
  • htp
  • DARZ
  • e-shelter
  • wusys
  • Telefónica

Customer solutions

DARZ GmbH, Darmstadt

Data center links between Darmstadt and Frankfurt 

Datev e.G., Nürnberg

dacoso renders DATEV printers mainframe compatibel 


Reliable DRK data through data center interconnection plus encryption


Watching TV differently with - and dacoso and ADVA Optical Networking realised the network for it.

htp GmbH, Hannover

The carrier from Lower Saxony uses the ADVA ROADM solution for even faster response to network demands

LEONIE AG, Nürnberg

Connectivity for the wire and cable giant

Merck KGaA, Darmstadt

Stronger protection of intellectual property at Merck

meridian Neue Energien GmbH, Suhl

dacoso provides monitoring of Italian solar plant from Meridian Solar

msg services ag

Measuring services and data center coupling for msg services ag

noris network AG, Nürnberg

Layer 1 encryption for Data Center Interconnect (DCI).

WiTCOM GmbH, Wiesbaden

Add-drop system for more networking flexibility