Technical and passive OSINT · Hosted free and open-data sources
Censys Free
Licence or access: hosted account/PAT
- status access
- hosted account/PAT
- i o and fit
- host/web/certificate search and lookups; official SDKs/CLI
- current limitations and safe interpretation
- about 100 credits/month; standard query 5, lookup 1; limited pages/concurrency; no Free vuln/history timeline
- official source
- Entitlements · API
Official sources
- Entitlements https://docs.censys.com/docs/data-access-tiers-entitlements
- API https://docs.censys.com/reference/get-started
Catalogued at the 2026-09-01 research baseline. Verify the licence, free-tier limits, API schema and source terms again before deployment, and record a version-pinned registry entry for whatever you select.