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193.104.222.28 has a threat confidence score of 98%. This IP address from United Kingdom (AS42201, PVDataNet AB) has been observed in 1,313 honeypot sessions targeting SIP protocols. First observed on April 25, 2026, most recently active April 26, 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.