# Brief Description of the Fronts

Introduction

DENIC's registration system is based on the Realtime Registry Interface RRI developed by DENIC. You can process requests through your own RRI client or through the RRI web client made available by DENIC.

RRI

DENIC only provides the server. Any user has to develop their own client, which must be able to use the RRI protocol.

Hint |  | You will find an RRI toolkit on the DENIC member website to support you in implementing an RRI client.

RRI Advantages

- Very well suited for large job volumes

- Requests and responses in realtime

- Very quick

- Supports transport protocol TCP

- Makes available two request formats, key/value and XML

- Communication is TLS-secured

RRI Disadvantages

Users need know-how for developing their own clients.

RRI Webclient

You can use the Web Interface - and the included technical web client on the member website - to transfer requests to RRI via a TLS-secured connection.

Notice |  | If you have an RRI login you can use the web interface in parallel. Log in with your valid RRI login.

RRI-Web Client Advantages

- Suited for small job volumes

- "Mobile" use possible; Browser is installed on nearly every computer

- The technical web client can be used to validate the syntax of requests in both the key/value and the XML format

- Rarely used request types (such as AuthInfo2) can be used with the web client

- Communication is TLS-secured

RRI Web Client Disadvantages

- No automated use possible

- Responses are provided exclusively via the web and cannot be viewed by the user (via web client) at a later date