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DNS 'ANY', 'A', 'AAAA', 'TXT', 'MX', and 'CNAME' responses for known forward DNS names
DNS IPv4 PTR responses
Responses to HTTP/1.1 GET requests against various HTTP ports
Responses to HTTP/1.1 GET requests against various HTTPS ports
X.509 certificate metadata observed when communicating with HTTPS endpoints
X.509 certificate metadata observed when communicating with miscellaneous non-HTTPS endpoints, such as IMAPS, POP3S, etc.
UDP scan results for common UDP services across all of IPv4
SYN scan results for common TCP services across all of IPv4
Open port results for Rapid7's National Exposure reports
Rapid7 Heisenberg Cloud Honeypot cowrie Logs
DNS 'ANY' responses for known forward DNS names from 2014-2017
DNS IPv4 PTR responses from 2013-2017
The Critical.IO project was designed to uncover large-scale vulnerabilities on the global IPv4 internet and scanned a number of ports across between May 2012 and March 2013.
Security data feeds available to Practitioners, Academics, and Researchers
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