DDNS Updater

DDNS Updater is a lightweight dynamic DNS client that periodically checks your public IP address and updates DNS A and/or AAAA records at many supported DNS providers. It can run as a small Docker/Kubernetes-friendly container or as standalone binaries, and includes a built-in web interface for configuration and status.

Key Features

• Updates A and AAAA records on a wide range of DNS providers
• Built-in web UI for managing settings and viewing status
• Runs as a minimal container image and as zero-dependency binaries
• Periodic IP checks with configurable intervals and multiple public IP “fetcher” methods
• Persists update history (e.g., last IP and change times) to a local JSON file
• Container healthcheck that verifies DNS resolution for configured domains
• Notification support via Shoutrrr-compatible endpoints

Use Cases

• Keep home server or homelab domains pointing to a changing residential IP
• Maintain IPv6 AAAA records for dual-stack self-hosted services
• Update multiple domains/providers from a single deployment (Docker or Kubernetes)

Limitations and Considerations

• Requires provider credentials/API tokens, and features depend on each provider’s API capabilities
• Persisting update history requires a writable data directory when running in a container

DDNS Updater is a practical choice when you need a simple, provider-agnostic DDNS solution with a web UI, flexible configuration, and container-first deployment options.