Show HN: Whodis – Domain investigation suite (WHOIS, DNS, stack)

Whodis's domain investigation suite “Whodis” delivers an evidence‑backed toolkit for registration, DNS, infrastructure, diagnostics, technology detection, research, and change monitoring, available as both a CLI and native GUI. For website owners, Whodis means you can now continuously verify that the domains interacting with your site—especially AI bots and crawlers—are authentic and not masquerading as legitimate services. By tracking DNS record changes and infrastructure fingerprints in real time, you can spot sudden shifts that often precede malicious scraping, credential stuffing, or unauthorized AI model training. This granular visibility helps you enforce stricter access controls and adjust your llms.txt directives before a rogue bot exploits a newly exposed endpoint. Actionable tips: 1. Integrate Whodis into your monitoring stack to receive alerts on any DNS or WHOIS changes for domains listed in your llms.txt file, enabling immediate policy updates. 2. Use Whodis’s technology‑detection feature to fingerprint AI‑powered crawlers (e.g., OpenAI, Anthropic) and automatically append them to a “Disallow” section in llms.txt. 3. Schedule daily CLI runs to generate change logs, then feed those logs into your SIEM for correlation with bot traffic spikes, ensuring rapid response to emerging threats.