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192.159.99.105 has a threat confidence score of 63%. This IP address from United States (AS210558, 1337 Services GmbH) has been observed in 3 honeypot sessions targeting SIP protocols. First observed on March 22, 2026, most recently active March 22, 2026.
Represents automated SIP reconnaissance activity characterized by multiple unauthenticated SIP methods (such as REGISTER and INVITE) issued using bot-like Call-ID formats. This behavior indicates an attempt to enumerate valid SIP users, extensions, or call routing behavior by systematically probing a SIP service without establishing legitimate registration or dialog context. The use of a numeric-only, hyphen-delimited Call-ID format across different SIP methods strongly suggests an automated scanner or fraud bot rather than a legitimate user agent.