Significant Threat
IP 31.70.86.142 is a German address operated by IONOS SE (ASN AS8560) that represents a high-risk threat entity assessed at 7/10 with 91% confidence, predominantly linked to VoIP fraud activity. The IP has accumulated 1,000 total abuse reports, with the dominant recent threat category being Fraud VoIP across 20 automated honeypot detection sensors, indicating sustained and targeted probing of VoIP infrastructure over a concentrated timeframe from May through June 2026.
The report volume and detection pattern for this address reveal a significant abuse history. With an activity frequency rated 8/10 and 20 independent honeypot sensors contributing reports, this IP exhibits the hallmarks of automated VoIP fraud enumeration campaigns. The geographic location in Germany and routing through IONOS SE, a major European hosting provider, suggests the address may be operating from either compromised residential infrastructure or a bulletproof hosting environment deliberately chosen for its perceived stability and reputation. The short reporting window of approximately one month indicates concentrated, purposeful activity rather than scattered opportunistic scanning.
Fraud VoIP exploitation involves manipulation of voice-over-internet-protocol systems to route unauthorized calls, typically to premium-rate numbers or international destinations, generating illicit revenue for threat actors while saddling victims with fraudulent charges. For an organization operating exposed VoIP services, an IP exhibiting this behavior suggests active enumeration of SIP credentials, probing for default passwords, or searching for misconfigured telephony endpoints. The real-world risk extends beyond service disruption to direct financial loss and potential compromise of confidential communications if authentication mechanisms are bypassed successfully.
Site operators should immediately block or rate-limit connections from 31.70.86.142 at the network perimeter firewall, particularly on SIP ports (5060 UDP/TCP) and associated VoIP signaling channels. Implementing strong authentication for all SIP registrations—including certificate-based mutual TLS, complex password policies, and fail2ban-style intrusion prevention that temporarily bans repeat offenders—substantially reduces credential-stuffing success rates. Regular monitoring of call detail records for anomalous patterns such as spikes in international or premium-rate destinations serves as an early warning indicator. Organizations should also consider implementing geolocation-based call routing restrictions and enforcing least-privilege access on telephony infrastructure to limit exposure from threat actors conducting reconnaissance.
ES 
GB 
FR 
AT 
CH 
UA