Censys
FreemiumLiveLast verified 24 Sept 2026
Search engine for internet-connected hosts: open ports, services, certificates and banners.
Example request
curl -s -u "$API_ID:$API_SECRET" 'https://search.censys.io/api/v2/hosts/8.8.8.8'
Free tier, in plain English
Free accounts can be created without sales contact and give 'basic visibility into standard ports and services'; the exact free-tier call limit isn't published on the pricing page.
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