ARPSyndicate's

Subdomain Center

The world's largest Subdomain & Shadow IT Intelligence database.

10B+

Subdomains

1B+

Domains

100k+

TOR Domains

500M+

Brands

Freely accessible — up to 500 results per query, in random order. Add an API key for full, sorted results.

Subdomain Center scours the web, gathering and interpreting data from across the Internet to map the world's shadow IT. Three engines: cuttlefish finds subdomains of a domain, octopus clusters a brand, and ammonites hunts a keyword across every host. Query it from your terminal with the puncia CLI, or build on it via the API documentation.

We do not take responsibility for any malicious use of this data; such use is entirely unintended.

Premium access

Need full, sorted results, higher limits, or bulk access? Get an API key.

Request access