54.39.136.228📋 Copy

## IP Intelligence Briefing: 54.39.136.228/32

Executive Summary

The target IP 54.39.136.228 presents a moderate risk profile (risk score 40) with contextual indicators suggesting elevated threat potential within its network environment. The IP is associated with OVH cloud infrastructure and resolves to ahrefs.net, operating in a subnet classified as high abuse density.

Network Classification & Ownership

• Organization: Dmytro, Ahrefs Pte Ltd
• ASN: 16276 (OVH)
• Netname: OVH-CUST-281059681
• Infrastructure Type: CloudCompute/Hosting
• Country: Canada (QC, Beauharnois)
• Network Role: Firewalled / No Services detected

Threat Indicators

• Overall Risk Score: 40 (Moderate Risk)
• DNSBL Status: Listed on 1 of 8 threat feeds
• Operator Score: 0.2174 (Minimal)
• Threat Persistence: 0 days observed
• Known Campaigns: None identified
• Tor/Proxy/Vpn: Not detected

DNS Resolution & Services

• PTR Hostname: proxy-ca002-san228.ahrefs.net
• Resolves to: ahrefs.net
• Open Ports: None detected
• TLS Certificates: None
• HTTP Services: None

Subnet Environment Analysis

The target resides in subnet 54.39.136.0/24 with concerning contextual factors:

• Abuse Density: 0.6094 (60.94%)
• Classification: High abuse
• Threat Siblings: 156 out of 256 total IPs
• Active Siblings: 173
• Inherited Risk: 24
• Neighbor Risk Distribution: 100 medium-risk neighbors observed

Historical Observations

Analysis of 16 historical observations reveals:

• Most Recent Signal (2026-06-20): DNS resolution to ahrefs.net with CAA records, confidence 0.80
• Operator Assessment (2026-06-15): Rated "Minimal" with score 0.2174
• Subnet Abuse Detection (2026-06-15): High abuse classification with 156 threat siblings identified
• Geolocation Data (2026-06-09): Canada confirmed via Cymru country method
• Threat Observation Count: 1 observed threat signal

Network Relationships

IP relationship graph indicates 33 connections, primarily to network entities within the OVH-CUST-281059681 customer network. No certificate or organizational relationships beyond the network scope were detected.

Security Recommendations

Based on the risk profile and subnet context, the following actions are recommended:

1. Monitor: Continue monitoring for service activation or port opening

2. Rate Limit: Apply rate limiting if traffic originates from this IP range

3. Geolocation Validation: Verify legitimate traffic patterns from Beauharnois, QC

4. DNSBL Monitoring: Track blacklist status changes across threat feeds

5. Subnet Context: Evaluate traffic from other IPs in 54.39.136.0/24 for correlated behavior

SOC Analyst Notes

While the target IP shows no current malicious indicators, the high-abuse subnet environment (60.94% abuse density) warrants heightened awareness. The ahrefs.net association suggests legitimate use, but the subnet-level threat concentration indicates potential for compromised infrastructure within the same network block. Recommend correlating with other threat intel sources for network-wide threat assessment.

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.