54.39.203.207📋 Copy

# IP Intelligence Briefing

Target IP: 54.39.203.207/32

Date: 2026-06-19

Classification: Moderate Risk Infrastructure

---

## Executive Summary

IP address 54.39.203.207 is a cloud hosting infrastructure endpoint associated with OVH (ASN 16276) under organization Dmytro, Ahrefs Pte Ltd. The IP resolves to a proxy hostname (proxy-ca008-san207.ahrefs.net) with no active services detected. Risk assessment yields a score of 50/100 (Moderate Risk), driven primarily by subnet-level abuse characteristics rather than direct malicious indicators.

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## Technical Profile

Ownership & Infrastructure:

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 54.39.203.0/24
• Network Role: Cloud Compute / Hosting
• Infrastructure Type: CloudCompute

Geolocation:

• Reported Location: Beauharnois, QC, CA (Canada)
• RTT Measurement: 27.2ms average
• Validation Status: GeoPlausible = false
• Note: RTT distance (27ms) is inconsistent with reported location (5,628km minimum possible RTT would be 112.6ms). Distance anomaly suggests potential reporting error.

DNS & Services:

• PTR Hostname: proxy-ca008-san207.ahrefs.net
• Forward Resolves: proxy-ca008-san207.ahrefs.net
• Domain: ahrefs.net
• Open Ports: None (firewalled / no services)
• SSL/TLS Certificates: None observed

---

## Threat Assessment

Direct Threat Indicators:

• Blacklist Count: 0
• DNSBL Listed: 2 of 8 total lists
• Known Campaigns: None
• Tor Exit: No
• Known Attacker: No
• Spam Source: No

Neighborhood Analysis (54.39.203.0/24):

• Abuse Density: 0.5664 (56.64%)
• Classification: high_abuse
• Total Siblings: 256
• Active Siblings: 191
• Threat Siblings: 145
• Risk Distribution: 98 medium, 2 low, 0 high risk
• Inherited Risk Score: 22

Historical Signal Analysis:

• Total Observations: 25
• Threat Observation Count: 1
• Threat Persistence Days: 0
• Persistently Malicious: No
• Ownership Changes: 0

---

## Security Recommendations

Recommended Actions: Block this IP address based on moderate risk classification and high-abuse subnet context.

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 54.39.203.207 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.203.207 drop

# NGINX

deny 54.39.203.207;

# pfSense

54.39.203.207/32

# Cloudflare WAF

Block 54.39.203.207 — IPDebrief risk score 50

# AWS WAF

Addresses: ["54.39.203.207/32"]

Description: IPDebrief risk 50

```

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## Intelligence Notes

1. Subnet Context: This IP resides in a high-abuse density subnet (56.64%). Of 145 threat-identified siblings, this IP carries no direct threat indicators. Risk is primarily contextual.

2. Service Status: No open ports or active services detected. Infrastructure appears to be in a passive or firewalled state.

3. Campaign Correlation: No correlated IPs or certificate matches detected. Campaign likelihood assessed as "none."

4. Operational Risk: While direct threat indicators are absent, the neighborhood abuse density warrants defensive positioning. The IP's moderate risk score reflects subnet-level exposure rather than confirmed malicious activity.

---

Prepared by: IPDebrief Intelligence

Analysis Confidence: Moderate

Recommended Action: Block with monitoring

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