IP address 77.91.66.181 has been flagged in 666 abuse reports across 21 independent threat intelligence sources, resulting in a threat score of 100.0/100 (critical risk). The primary activity associated with this IP is abuseipdb blacklist, along with aggregated threat, attacks, brute force, known attacker, known malicious, malware c2, malware infrastructure, port scan, reconnaissance, reputation low, scanning, ssh brute force, ssh bruteforce, suspicious activity, voip attack.
This IP is geolocated in Germany (Frankfurt am Main) and belongs to the network Oc Networks Limited (AS209693). Reports span from 2026-08-12 to 2026-10-13.
Assessment: With 666 abuse reports, 77.91.66.181 shows persistent malicious activity that has been flagged by multiple threat intelligence feeds. The IP has been observed conducting automated SSH login attempts against internet-facing servers, a technique commonly used to gain unauthorized access to systems.