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66.132.172.39 has a threat confidence score of 63%. This IP address from United States (AS398324, Censys, Inc.) has been observed in 8 honeypot sessions targeting HTTP, SMTP, DOCKER protocols. First observed on March 19, 2026, most recently active March 20, 2026.
Identifies HTTP requests targeting the web server root path ("/"), typically used for initial service discovery, host validation, or baseline content inspection prior to deeper enumeration.
SMTP interaction identified as an internet-wide scanning probe originating from Censys infrastructure. The client announces itself via EHLO www.censys.io and issues a STARTTLS request to verify TLS upgrade support and collect service capability metadata. This pattern reflects automated reconnaissance and exposure mapping rather than direct exploitation, but still represents active external probing of the SMTP service.