Domain Locker provides an all-in-one domain portfolio dashboard that consolidates expiration tracking, DNS records, and infrastructure health across every registrar you use. Add your domains to automatically harvest registration dates, name servers, SSL validity windows, IP allocations, and subdomains without manual data entry. Customizable notification rules broadcast renewal warnings and configuration change alerts through webhooks, email, Telegram, Slack, or WhatsApp before services experience unintended downtime. Interactive timeline views map renewal deadlines and calculate historical acquisition costs against annual operating expenses to clarify portfolio valuations. Built-in monitoring tools ping endpoints to record response latencies, HTTP status codes, and server availability metrics for every registered address. Audit logs preserve historical snapshots of DNS modifications, WHOIS adjustments, and registrar migrations to simplify infrastructure troubleshooting across teams. Integrated tags and resource associations organize personal blogs, client projects, and staging environments into isolated workspaces with role-based permissions and two-factor authentication. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.