High Risk
IP 185.156.73.16 is a high-risk address originating from Ukraine that has been flagged in 1,015 abuse reports for active port-scanning reconnaissance against exposed network services. With a threat level of 8/10 and a confidence score of 91%, this IP demonstrates persistent scanning behavior and poses a credible risk to internet-facing systems.
Automated honeypot sensors detected this IP conducting widespread reconnaissance activity between March 2026 and June 2026, indicating sustained probing over approximately three months. The IP is registered to FOP Dmytro Nedilskyi under AS211736 in the Ukrainian network space, and all recent reports consistently cite port-scanning behavior, specifically CiscoASA probe patterns. The volume of 1,015 reports and activity frequency rating of 8/10 suggest this is not opportunistic or transient activity but rather sustained, deliberate reconnaissance targeting exposed services.
Port scanning serves as the initial reconnaissance phase in most network intrusion attempts, systematically mapping accessible entry points to identify vulnerable services. The CiscoASA-specific probe pattern indicates focused attention on firewall and security appliance configurations, likely seeking outdated or misconfigured VPN endpoints, management interfaces, or SSL/TLS services. For organizations with exposed CiscoASA appliances or similar perimeter devices, this scanning represents a concrete precursor threat requiring immediate defensive action.
Site operators should block or rate-limit this IP at the firewall level, particularly restricting access to management interfaces and VPN services. Implementing strict ingress filtering, disabling unused services, and deploying monitoring solutions to detect scanning patterns will reduce exposure. Using tools such as fail2ban can help automate defensive responses against repeated probe attempts from this source.
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