Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

ddserver - A dynamic DNS service


ddserver is a server-side application for dynamic DNS.

It allows you to specify hostnames (subdomains) inside a dynamic DNS zone, and to update the IPv4 address of those hostnames using the dyndns2 update protocol ( This enables you to access hosts with dynamic IP addresses by a static domain name, even if the IP address changes.


  • Nice and intuitive Web-UI
    • Automatic / Semi-automatic registration or manual user management
    • Administrators can add and manage zones
    • Users can add and manage hostnames
    • Re-captcha support
  • IP-address update using the dyndns2 protocol
    • Update multiple hostnames at once
    • Works with most homerouters, ddclient or even wget
    • Manual IP-address updates via Web-UI
  • Support for multiple domains
  • Configurable number of hosts per user
  • Strong encryption of all passwords (host and user)
  • Supports distributed installation
    • Separate packages for Web-UI, updater and DNS-backend
    • Redundancy support

Mode of operation

ddserver is written in Python (2.7) using the Bottle Web Framework and comes with a clean HTML5 frontend using the Bootstrap3 CSS framework.

All user and hostname information is stored in a MySQL database. For name resolution ddserver depends on PowerDNS as the DNS server.

The individual parts of ddserver, which may run on one server, or distributed on different machines, are

  • ddserver-bundle is the bundled version of
    • ddserver-interface: A nice-looking webinterface for adding hostnames or zones and managing users.
    • ddserver-updater: The implementation of the dyndns2 update protocol.
  • ddserver-recursor answers DNS queries. It runs as a pipe-backend for the PowerDNS server.


ddserver is free software and can be redistributed and/or modified under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.