54.39.210.194📋 Copy

## IP INTELLIGENCE BRIEFING: 54.39.210.194/32

Classification: Moderate Risk / High-Abuse Subnet

Date: 2026-06-15

Analyst: IPDebrief Intelligence Team

Executive Summary

IP 54.39.210.194 is a cloud-hosted IP address belonging to OVH network (ASN 16276) with a moderate risk score of 40. The IP is associated with Ahrefs Pte Ltd and is part of a high-abuse subnet (54.39.210.0/24) with 73.44% abuse density. The address resolves to proxy-ca007-san194.ahrefs.net and shows evidence of blacklist listings.

Ownership and Infrastructure

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network: 54.39.210.0/24
• Infrastructure Type: Cloud Compute / Hosting
• Country: CA (Canada) - Beauharnois, QC
• DNS Resolution: proxy-ca007-san194.ahrefs.net (forward confirmed)

Risk Indicators

• Risk Score: 40 (Moderate Risk)
• Abuse Confidence: Evidence of blacklist listings (1 of 8 DNSBL lists)
• Operator Score: 0.2174 (Minimal)
• Route Stability: Unstable (route changes detected in 30-day window)
• Geo Validation: Implausible - RTT of 27ms inconsistent with 5,629km reported distance (minimum possible 112.6ms)

Neighborhood Analysis

The /24 subnet (54.39.210.0/24) shows elevated abuse characteristics:

• Abuse Density: 0.7344 (high abuse)
• Active Siblings: 172 of 256 total
• Threat Siblings: 188
• Risk Distribution: 100 medium-risk IPs in neighborhood
• Subnet Classification: high_abuse

Historical Observations

• Total Signals: 18 observations over monitoring period
• Latest Subnet Classification (2026-06-15): high_abuse (confidence 0.75)
• Blacklist Activity (2026-06-10): Listed on 8 blacklist categories with maximum severity "high"
• Threat Persistence: Single threat observation event, not persistently malicious

Services Assessment

• Open Ports: None detected
• HTTP/HTTPS Services: No active services observed
• TLS Certificates: Not applicable
• Network State: Firewalled / No Services

Recommended Actions

Immediate Blocking Recommended. Implement the following firewall rules:

• iptables: `iptables -A INPUT -s 54.39.210.194 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 54.39.210.194 drop`
• nginx: `deny 54.39.210.194;`
• pfSense: Block 54.39.210.194/32
• Cloudflare WAF: Block with expression `ip.src eq 54.39.210.194`
• AWS WAF: Add 54.39.210.194/32 to block list

Intelligence Context

This IP is part of OVH's cloud infrastructure hosting Ahrefs services. The subnet-level abuse density is significant, suggesting this environment is frequently leveraged for malicious activities. While the specific IP shows no active open ports or direct attack indicators, the high-abuse neighborhood context warrants defensive blocking. The implausible geolocation data may indicate spoofed or misconfigured DNS records commonly associated with hosting environments used for compromised downstream traffic.

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*This briefing is based on IPDebrief intelligence data. Combine with other signals before taking action. Rules provided are probabilistic recommendations.*

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