54.39.203.19📋 Copy

## INTELLIGENCE BRIEFING: IP 54.39.203.19

EXECUTIVE SUMMARY

IP address 54.39.203.19 is a cloud-hosting endpoint operating within an OVH infrastructure in Beauharnois, Quebec, Canada. The IP presents a Moderate Risk profile (Risk Score: 40) with no active threat indicators. However, the associated /24 subnet demonstrates elevated abuse density (0.6367), warranting defensive monitoring.

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INFRASTRUCTURE PROFILE

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network: OVH-CUST-281059687
• CIDR Block: 54.39.203.0/24
• Infrastructure Type: CloudCompute / Hosting
• Geolocation: Canada, QC, Beauharnois (3,000km accuracy radius)

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NETWORK ROLE & SERVICES

• Cloud Provider: OVH
• Hosting: Active
• Open Ports: None detected (firewalled/no services)
• CDN/Proxy/VPN: Not detected
• Tor Exit: No

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THREAT INDICATORS

• Risk Score: 40 (Moderate)
• Abuse Confidence: Not applicable
• Blacklist Count: 0
• Known Campaigns: None
• Known Attacker: No
• Spam Source: No

Control Plane Observations:

• DNSBL Listed: 1 of 8 total lists
• Route Stability: Not stable (route changes within 30 days)
• RPKI State: Not available
• IRR Consistency: Not available

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DOMAIN ASSOCIATION

• PTR Hostname: proxy-ca008-san19.ahrefs.net
• Forward Resolution: ahrefs.net
• Forward Confirmed: No
• Email Authentication: SPF/DMARC not configured

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SUBNET ANALYSIS (54.39.203.0/24)

• Total Siblings: 256
• Active Siblings: 197
• Threat Siblings: 163
• Abuse Density: 0.6367 (High Abuse classification)
• Inherited Risk Score: 25
• Neighborhood Risk Distribution: 0 High, 100 Medium, 0 Low

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OBSERVATION HISTORY

• Total Signals: 23 observations
• Most Recent Signal: 2026-06-20T12:31:47Z
• Ownership Changes: 0
• Threat Persistence Days: 0
• Persistently Malicious: No

Recent signals indicate stable ownership and consistent cloud hosting classification without persistent malicious activity patterns.

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RELATIONSHIP MAPPING

• Total Relationships: 47
• Network Relationships: Multiple associations to OVH-CUST-281059687

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SECURITY RECOMMENDATIONS

Based on moderate risk score and subnet-level abuse density, the following defensive measures are recommended:

Firewall Rules:

• `iptables -A INPUT -s 54.39.203.19 -j DROP`
• `nft add rule inet filter input ip saddr 54.39.203.19 drop`

Web Application Firewall:

• Cloudflare WAF: Block 54.39.203.19
• AWS WAF: Add 54.39.203.19/32 to deny list

Note: These recommendations are probabilistic and should be combined with other signals before implementation.

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ASSESSMENT

The IP 54.39.203.19 does not exhibit active threat indicators but operates within a high-abuse-density subnet. The legitimate domain association (ahrefs.net) and lack of open services suggest this may be an administrative or monitoring endpoint. However, the moderate risk score combined with subnet abuse patterns warrants continued monitoring and consideration of blocking at the perimeter firewall.

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