54.39.210.143📋 Copy

# IP Intelligence Briefing: 54.39.210.143/32

## Executive Summary

IP address 54.39.210.143 is a moderate-risk infrastructure host operating within a high-abuse-density cloud computing environment. The address resolves to the Ahrefs.net domain and is hosted on OVH infrastructure in Canada. While the IP itself shows no direct threat indicators, it operates within a subnet with significant abuse activity.

## Technical Profile

• Risk Score: 40 (Moderate Risk)
• Infrastructure Type: Cloud Compute / Hosting
• Provider: OVH (ASN 16276)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network Block: 54.39.210.0/24
• Geolocation: Canada (QC), Beauharnois
• DNS Resolution: proxy-ca007-san143.ahrefs.net

## Threat Assessment

The IP address shows no direct threat indicators:

• No known campaigns or threat feeds
• Zero blacklist listings
• Not classified as a known attacker, spam source, or Tor exit node
• No active open ports or services detected

However, the IP operates in a high-abuse-density environment with significant contextual risk.

## Neighborhood Analysis

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

• Abuse Density: 0.793 (High)
• Subnet Classification: high_abuse
• Total Siblings: 256
• Active Siblings: 173
• Threat Siblings: 203

Of the sampled neighbors, 100 show medium risk scores (40 each), indicating consistent risk patterns across the subnet.

## Historical Observations

The IP has been observed 28 times in the signal history. Recent observations include:

• Subnet abuse density measurements confirming high-abuse classification
• Geolocation data confirming Canadian origin
• DNS resolution to ahrefs.net with CAA record presence
• No persistent threat behavior observed over time

## Infrastructure Context

Control plane data indicates:

• BGP origin: 54.39.0.0/16 via AS34549 → AS16276
• Route stability: Stable with 0 route changes in 30 days
• DNSSEC: Valid
• RIR registry: RIPE NCC
• Delegation age: 9,229 days

## Recommendations

1. Monitor, but do not block immediately: The moderate risk score (40) combined with the high-abuse subnet context warrants monitoring rather than immediate blocking.

2. Review related traffic: Investigate traffic patterns to/from the 54.39.210.0/24 subnet, particularly from the 203 threat-sibling IPs.

3. Validate legitimate use: Confirm that traffic from this IP aligns with expected Ahrefs.net operations given the DNS resolution.

4. Consider subnet-level rules: Given the high abuse density (0.793) in the /24, evaluate whether subnet-level filtering is appropriate for your threat posture.

## Key Indicators

• IP: 54.39.210.143
• Domain: ahrefs.net
• ASN: 16276
• Risk Score: 40
• Subnet Abuse Density: 0.793

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