This is a client for the Open Charging Network's decentralized address book of participants, also known as the OCN Registry.
There is no backend between you and the Registry. You interact with the smart contracts directly.
Right now you can only view data for the test and production networks (listed below). If you want to manage your data in the Registry, try out the command line interface.
Don't trust this deployment? If you prefer, you can check out the source and follow the instructions to run it yourself.