54.39.210.148📋 Copy

# INTELLIGENCE BRIEFING: 54.39.210.148

Classification: Moderate Risk | Date: Current | Status: Active Monitoring

## Executive Summary

IP address 54.39.210.148 is a Canadian OVH hosting infrastructure endpoint associated with Ahrefs Pte Ltd. The IP demonstrates moderate risk (50) with evidence of blacklist listings and operates within a high-abuse density subnet (54.39.210.0/24). No active services or open ports detected; endpoints are firewalled.

## Technical Profile

Ownership & Infrastructure:

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network Block: 54.39.210.0/24
• Registration: ARIN
• Geolocation: Beauharnois, Quebec, Canada (3000km accuracy radius)

DNS & Services:

• PTR Hostname: proxy-ca007-san148.ahrefs.net
• Hosted Domain: ahrefs.net
• Forward Resolution: 1 confirmed hostname
• Open Ports: None detected
• HTTP/TLS Services: Not available (firewalled)
• Email Auth: SPF/DMARC not configured

Control Plane:

• Route Stability: Unstable
• Operator Score: 0.2174 (Minimal)
• DNSSEC: Valid
• DNSBL Listings: 2/8 total lists
• RPKI/IRR: Consistency data unavailable

## Threat Indicators

Current Threat Status:

• Known Attacker: False
• Tor Exit Node: False
• Spam Source: False
• Campaign Matches: 0
• Blacklist Status: Listed on 2 major blacklists

Historical Observations:

• Multiple blacklist entries observed (June 2026)
• Maximum severity: High
• Total blacklist count: 8
• List categories include spam/abuse indicators

## Neighborhood Analysis

Subnet Risk Assessment: 54.39.210.0/24

• Abuse Density: 0.7891 (Elevated)
• Classification: High Abuse
• Active Siblings: 173/256
• Threat Siblings: 202
• Inherited Risk Score: 31

Neighbor Risk Distribution:

• High Risk: 0
• Medium Risk: 100
• Low Risk: 0

## Relationship Graph

• Total Relationships: 55
• Primary Associations: OVH-CUST-281059686 (network)
• Network Classification: Hosting infrastructure

## Security Recommendations

1. Monitor: Track blacklist status changes; current listings suggest ongoing abuse activity

2. Block: Consider blocking at perimeter if threat intelligence indicates active malicious use

3. Correlate: Investigate 202 threat siblings in same /24 subnet for coordinated activity

4. Validate: Verify legitimacy given Ahrefs association but elevated abuse density

Priority: Medium — Monitor for active exploitation attempts; subnet-wide threat density warrants broader surveillance.

---

*Report generated from IPDebrief intelligence platform. Data current as of analysis timestamp.*

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