54.39.6.255📋 Copy

# INTELLIGENCE BRIEFING: IP 54.39.6.255/32

Classification: Moderate Risk | Date: Current | Source: IPDebrief Intelligence Platform

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## EXECUTIVE SUMMARY

IP address 54.39.6.255 is a cloud infrastructure endpoint hosted on OVH (ASN 16276) under customer block OVH-CUST-281059680. The IP resolves to ahrefs.net with PTR hostname proxy-ca001-san255.ahrefs.net. Risk assessment indicates moderate threat level (score: 40) with significant neighborhood abuse density in the parent /24 subnet. No active threat indicators present, but subnet context warrants defensive posture.

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## TECHNICAL PROFILE

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## NETWORK CONTEXT ANALYSIS

The parent subnet 54.39.6.0/24 exhibits elevated abuse characteristics:

• Abuse Density Score: 0.6836 (High)
• Threat Siblings: 175 of 256 total IPs in subnet
• Subnet Classification: High Abuse
• Inherited Risk: 27

This neighborhood context suggests the IP operates within a high-density hosting environment typical of OVH cloud infrastructure. The abuse density warrants defensive consideration despite individual IP risk score.

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## OBSERVATION HISTORY

Analysis of 22 historical observations reveals:

• DNS Resolution: Consistent resolution to ahrefs.net domain with CAA records present
• Geolocation Consistency: Multiple sources confirm Canada (Beauharnois, QC)
• Infrastructure Provider: AS16276 OVH SAS consistently identified
• Threat Persistence: No persistent malicious behavior detected (0 threat observation days)
• Recent Signals: Certificate and DNS signals observed June 2026

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## RELATIONSHIP GRAPH

IP exhibits 33 detected relationships, primarily classified as Same Network entries referencing OVH-CUST-281059680. No direct associations to known malicious campaigns, malware families, or certificate-based threat indicators.

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## DEFENSIVE RECOMMENDATIONS

Recommended Actions: Block at perimeter and application layers

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 54.39.6.255 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.6.255 drop

# nginx

deny 54.39.6.255;

# Cloudflare WAF

Block with filter: ip.src eq 54.39.6.255

# AWS WAF

Addresses: 54.39.6.255/32

```

Risk Assessment: Block recommendation generated based on subnet abuse density and moderate individual risk score. Validate against internal threat intelligence before implementation.

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## THREAT INDICATORS

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Campaigns: None detected
• Blacklist Count: 0

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## OPERATIONAL NOTES

This IP operates within a commercial cloud hosting environment (OVH). The absence of active service ports and presence of DNS records for ahrefs.net suggests legitimate infrastructure deployment. However, the high-abuse subnet context and DNSBL listing warrant continued monitoring and defensive blocking at perimeter layers. No immediate threat indicators require emergency response.

End of Briefing

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