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Passively find known subdomains for a domain, as a list or count.
Copy the install command and let the AI configure it · recommended for beginners
Please install the "Subdomain API" MCP server from askskill: Run: claude mcp add --transport http 'app-subdomain-subdomains' 'https://api.subdomain.app/mcp'
Find known subdomains for example.com, return them as a list, and indicate which entries may be historical.
A list of subdomains for the domain, with a note that results are passive data and may include historical entries.
Count the known subdomains for example.com and return only the total number.
A total count of known subdomains for quick asset or exposure assessment.
List known subdomains for example.com and, if possible, distinguish common current subdomains from those likely found only in historical data.
A subdomain inventory with hints about historical entries for follow-up investigation or asset review.
Check domain expiry, list monitored domains, and add new domains easily.
Check domain availability and compare prices across TLDs and registrars.
Check domain availability and retrieve registration details for registered domains.
Check domain availability, history, pricing, and buy links in bulk.
Check bulk domain registration status across 200+ TLDs with WHOIS and DNS fallback.
Check domain registration status and monitor expiry, deletion, and availability.