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208.115.193.121 has a threat confidence score of 64%. This IP address from United States (AS46475, Limestone Networks, Inc.) has been observed in 17 honeypot sessions targeting SIP protocols. First observed on February 22, 2026, most recently active February 23, 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.