WhoisLookup

Reach for this when you need to investigate domains without leaving your Claude workspace. It exposes WHOIS lookups, DNS record queries, SSL certificate inspection, and domain availability checks through a straightforward SSE transport. Useful for security research, domain due diligence, or when you're debugging DNS issues and want to pull registration details, nameserver configs, and certificate chains in one place. The server runs remotely at whois.rjctdlabs.xyz, so you don't need to manage your own WHOIS client or parse different registry formats. Good for ad hoc domain intelligence gathering during investigations or technical research.