54.39.0.88📋 Copy

# IP Intelligence Briefing: 54.39.0.88/32

Date: Current Analysis

Risk Level: Moderate Risk (Score: 40/100)

Status: Cloud Hosting Infrastructure

---

## Executive Summary

IP 54.39.0.88 is an OVH cloud hosting resource registered to "Dmytro, Ahrefs Pte Ltd" within the Canadian infrastructure ecosystem. The IP exhibits moderate risk characteristics with a risk score of 40. While the IP itself shows no active threat indicators, its subnet demonstrates elevated abuse density (0.6992) with 179 of 220 active sibling IPs flagged as threats, indicating a compromised or high-risk hosting environment.

---

## Network Attribution

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## Threat Indicators

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Blacklist Count: 0
• DNSBL Listed: 1 of 8 lists
• Abuse Confidence Score: Not calculated
• Threat Persistence: 0 days (not persistently malicious)

---

## Subnet Analysis

The /24 subnet (54.39.0.0/24) shows concerning neighborhood patterns:

• Abuse Density: 0.6992 (High)
• Subnet Classification: high_abuse
• Total IPs: 256
• Active IPs: 220
• Threat IPs: 179 (81.4% of active siblings)
• Inherited Risk Score: 27

This subnet exhibits significant compromise potential. The high concentration of threat siblings suggests either a compromised hosting provider segment or a network segment frequently abused for malicious activities.

---

## DNS & Service Analysis

• Reverse DNS: proxy-ca004-san88.ahrefs.net
• Forward Resolution: proxy-ca004-san88.ahrefs.net
• Open Ports: None detected
• Services: Firewalled / No Services
• TLS Certificate: Not detected
• HTTP Title: Not detected

The lack of open services suggests either a properly secured host or a dormant/reserved IP address.

---

## Historical Observation Trend

Eighteen observations recorded over the monitoring period. Recent data (June 2026) shows consistent OVH cloud hosting classification with no significant behavioral changes. Geo-location confidence remains low (0.35), indicating location data may be inferred rather than directly observed.

---

## Recommended Actions

Based on risk profile and neighborhood context, the following firewall rules are recommended:

```bash

# iptables

iptables -A INPUT -s 54.39.0.88 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.0.88 drop

# nginx

nginx: deny 54.39.0.88;

# pfSense

54.39.0.88/32

# Cloudflare WAF

{

"description": "Block 54.39.0.88 — IPDebrief risk score 40",

"action": "block",

"filter": { "expression": "ip.src eq 54.39.0.88" }

}

# AWS WAF

{

"Addresses": ["54.39.0.88/32"],

"Description": "IPDebrief risk 40"

}

```

Note: Consider subnet-level blocking (54.39.0.0/24) given the 81.4% threat sibling rate, if traffic from this subnet is not mission-critical.

---

## Intelligence Assessment

This IP represents a moderate-risk cloud hosting resource in a high-abuse subnet. While the specific IP shows no active malicious behavior, the neighborhood context indicates elevated compromise potential. The presence of 179 threat siblings within the /24 subnet warrants consideration of broader subnet-level risk management. Recommend monitoring for any behavioral changes and evaluating subnet-wide threat patterns if operational constraints permit.

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