Bulk Data Access
We provide bulk access to the data that powers Censys for both enterprise customers and approved non-commercial researchers.
These datasets contain curated, labeled data that describe IPv4 hosts, websites, and certificates, as well as what we have found in historical scans.
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Lightweight banner grabs on more than 1,000 popular ports across all hosts in the IPv4 address space. More Information »
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Hosts in the public IPv4 address space populated with deeper port/protocol scan data on selected ports
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Raw and parsed data certificates synchronized with public CT logs or discovered via Internet-wide scans
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Port and protocol scan data for websites in the Alexa top million domains
For commercial information, please contact our sales team. To apply for research access, please see Research Access to Censys Data.
Raw Scan Data
We also publish the raw handshakes from our horizontal Internet scans. These data files contain the ZMap or ZGrab JSON output for the scan of a single port or protocol. For example, JSON encoded transcript of a TLS handshake with every IPv4 host on TCP/443.
Please note that we plan to discontinue publishing these individual scan results in 2019.