54.39.89.185📋 Copy

# IP INTELLIGENCE BRIEFING

Target: 54.39.89.185/32

Classification: Moderate Risk Cloud Infrastructure

Date: Current Intelligence Cycle

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## EXECUTIVE SUMMARY

IP 54.39.89.185 presents as a moderate-risk (40/100) cloud computing resource hosted within OVH's Canadian infrastructure. The IP operates within a subnet exhibiting high abuse density (0.7578), with 194 of 256 sibling IPs classified as threat sources. While the individual IP shows no active threat indicators, neighborhood context and geolocation inconsistencies warrant elevated monitoring.

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## OWNERSHIP & INFRASTRUCTURE

• Organization: Dmytro, Ahrefs Pte Ltd (OVH customer)
• ASN: 16276 (OVH SAS)
• CIDR Block: 54.39.89.0/24
• Infrastructure Type: Cloud Compute (OVH)
• Network Role: Firewalled / No Services Detected
• RIR Registration: ARIN

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## GEOLOCATION ANALYSIS

• Reported Location: Beaucharnois, Quebec, Canada
• GeoValidation Status: ⚠️ IMPLAUSIBLE
• Issue: RTT measurements indicate 5,629km distance from probe origin, but minimum possible RTT for this distance (112.6ms) exceeds observed latency (32ms)
• Implication: Geolocation data may be spoofed or misattributed; source claims origin mismatch

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## THREAT INDICATORS

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## NEIGHBORHOOD CONTEXT (54.39.89.0/24)

• Abuse Density Classification: HIGH ABUSE
• Threat Siblings: 194 of 256 IPs (76%)
• Active Siblings: 164 of 256 IPs
• Neighborhood Risk Score: 30 (inherited)
• All Neighbor IPs: Risk score 40, Authority score 50

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## OBSERVATION HISTORY

• Total Observations: 24 signals
• Recent Activity: 2026-06-28 (threat indicators present)
• Pattern: Consistent high-abuse classification maintained across observation period
• Threat Persistence: 0 days (no persistent malicious behavior detected)

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## DNS & SERVICE PROFILE

• PTR Record: proxy-ca012-san185.ahrefs.net
• Forward Resolution: Confirmed to ahrefs.net domain
• Open Ports: None detected
• TLS Certificates: None
• Email Authentication: No SPF/DMARC configured

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## RECOMMENDED ACTIONS

Firewall Rules (Immediate Implementation)

```bash

# iptables

iptables -A INPUT -s 54.39.89.185 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.89.185 drop

# nginx

deny 54.39.89.185;

# pfSense

54.39.89.185/32

# Cloudflare WAF

Action: block

Expression: ip.src eq 54.39.89.185

# AWS WAF

Addresses: 54.39.89.185/32

Description: IPDebrief risk 40

```

Priority Assessment

1. HIGH: Block traffic from subnet 54.39.89.0/24 due to 76% threat sibling ratio

2. MEDIUM: Monitor for geolocation spoofing patterns in logs

3. LOW: No immediate active threat indicators require escalation

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## INTELLIGENCE NOTE

This IP operates within Ahrefs infrastructure (legitimate SEO analytics platform) but within a subnet exhibiting significant abuse patterns. The moderate individual risk score should be contextualized against the high neighborhood abuse density. Recommendation: Implement subnet-level blocking (54.39.89.0/24) rather than single-IP blocking to prevent adjacent malicious activity.

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*Report generated by IPDebrief Intelligence Platform*

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