Domain Locker

Domain Locker is a self‑hosted, open‑source utility for tracking and managing a collection of domain names. It aggregates information such as SSL certificates, hosts, registrars, IP addresses, DNS records, and subdomains, allowing users to add contextual data like costs, tags, and notes. The platform presents detailed analytics, charts, and visualizations for each domain, and offers export options for backup or migration.

The system provides alerts for upcoming expirations and configurable notifications about changes to security settings, DNS, WHOIS, and other attributes via email, webhook, push, Telegram, Signal, and similar channels. It also monitors website health, performance metrics, and security recommendations, while tracking renewal costs, valuations, and profit‑loss trends.

Users can organize domains with tags, customize the interface with themes and dark mode, and access data through an API, Prometheus, iCal, RSS, or embeddable widgets. Authentication supports SSO and two‑factor verification, ensuring private, secure control over the portfolio.