54.39.136.166📋 Copy

# IP Intelligence Briefing: 54.39.136.166/32

## Executive Summary

IP address 54.39.136.166 operates within OVH hosting infrastructure (ASN 16276) in Beauharnois, QC, Canada. The address resolves to proxy-ca002-san166.ahrefs.net and is classified as cloud compute/hosting infrastructure. While the individual IP shows no direct threat indicators, the /24 subnet exhibits high abuse density with 141 of 144 active siblings flagged as threats.

## Technical Profile

Ownership & Classification:

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 54.39.136.0/24
• Infrastructure Type: CloudCompute/Hosting
• DNS Resolution: proxy-ca002-san166.ahrefs.net (ahrefs.net domain)

Reputation Metrics:

• Risk Score: 40 (Moderate Risk)
• Abuse Confidence Score: Not available
• Blacklist Count: 0
• DNSBL Listings: 1 of 8 total lists

Network Role:

• Provider: OVH
• Connection Type: Cloud hosting environment
• Services: No open ports detected (Firewalled/No Services)
• Mobile/Residential: False

## Neighborhood Analysis

Subnet 54.39.136.0/24 demonstrates elevated risk characteristics:

• Abuse Density: 0.5529 (high_abuse classification)
• Inherited Risk: 22
• Total Siblings: 255
• Active Siblings: 144
• Threat Siblings: 141

The subnet contains 141 IPs classified as threats, indicating this infrastructure segment is heavily utilized for potentially malicious activity. The IP in question shares this high-risk environment despite lacking direct malicious indicators.

## Observation History

Analysis of 24 observations reveals consistent classification as OVH hosting infrastructure. Recent signals from 2026-06-14 confirm network ownership, DNS records, and operator scoring (0.2174/8.0). The IP shows no historical threat persistence and no observed malicious campaigns.

Key Historical Signals:

• Network classification: OVH cloud/hosting
• Abuse density classification: high_abuse
• DNS records: ahrefs.net domain with CAA records present
• Operator score: Minimal (0.2174)

## Geographic Validation

Geolocation data shows inconsistencies:

• Reported Location: Beauharnois, QC, Canada
• Distance from probe: 5,629 km
• Minimum possible RTT: 112.6ms
• Observed RTT: 27ms
• GeoPlausible: False

The RTT violation suggests potential geolocation spoofing or data inconsistency requiring verification.

## Relationship Graph

The IP maintains 58 relationships, predominantly same-network associations with OVH-CUST-281059681. No cross-network or organizational relationships detected beyond the immediate hosting provider.

## Recommended Security Actions

Immediate Actions:

• No direct blocking recommended due to moderate risk score (40) and lack of direct threat indicators
• Monitor for outbound connection attempts to known malicious infrastructure
• Implement egress filtering to prevent lateral movement

Firewall Rules Available:

• iptables: `iptables -A INPUT -s 54.39.136.166 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 54.39.136.166 drop`
• nginx: `deny 54.39.136.166;`
• pfSense: `54.39.136.166/32`
• Cloudflare WAF: Block IP with expression `ip.src eq 54.39.136.166`
• AWS WAF: Add to block list with CIDR `54.39.136.166/32`

## Intelligence Assessment

This IP represents low-confidence malicious activity within a high-abuse hosting subnet. The lack of direct threat indicators (no known attacks, campaigns, or spam sources) combined with the moderate risk score suggests legitimate hosting infrastructure. However, the neighborhood context—141 threat siblings in a 144-active subnet—warrants elevated monitoring.

Confidence Level: Low-Medium

Primary Concern: Hostile neighborhood environment

Recommended Action: Monitor, do not block without additional indicators

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*Intelligence generated by IPDebrief Threat Analysis Platform*

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