54.39.203.177📋 Copy

# IP INTELLIGENCE BRIEFING

Target IP: 54.39.203.177/32

Date: 2026-06-21

Classification: Moderate Risk / High Abuse Neighborhood

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## EXECUTIVE SUMMARY

IP address 54.39.203.177 is an OVH cloud hosting endpoint with a risk score of 40 (Moderate Risk). The IP resides in a high-abuse subnet (54.39.203.0/24) with 170 threat siblings out of 215 active IPs. While the IP shows no known attack campaign indicators, the subnet environment presents elevated risk requiring monitoring.

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## OWNERSHIP & INFRASTRUCTURE

• AS Number: 16276 (OVH SAS)
• Organization: Dmytro, Ahrefs Pte Ltd / OVH-CUST-281059687
• Infrastructure Type: CloudCompute (hosted)
• ISP/Provider: OVH
• Geolocation: Beaucharnois, Quebec, Canada (CA)
• CIDR Block: 54.39.203.0/24

Note: Geo validation shows RTT discrepancy (26ms measured vs 112.6ms minimum for 5,629km distance), indicating potential geo-fabrication or multi-hop routing.

---

## NETWORK THREAT INDICATORS

DNS Analysis:

• PTR Record: proxy-ca008-san177.ahrefs.net
• Forward Resolution: ahrefs.net domain
• Forward Confirmed: Negative
• SPF/DMARC: Not configured

Service Status: Firewall configured / No open services detected

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## SUBNET ENVIRONMENT ANALYSIS (54.39.203.0/24)

• Total Siblings: 256 IPs
• Active Siblings: 215
• Threat Siblings: 170
• Abuse Density: 0.6641 (High Abuse)
• Inherited Risk: 26/100

Risk Distribution:

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

Assessment: The subnet demonstrates concentrated abuse patterns. This IP inherits elevated neighborhood risk despite individual clean signal indicators.

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## OBSERVATION HISTORY (25 signals tracked)

Recent subnet abuse density trend:

• 2026-06-21: 0.6992 abuse density
• 2026-06-16: 0.6641 abuse density
• Classification: Consistently "high_abuse"

The subnet shows persistent high-abuse classification with increasing threat density over the observation window.

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## RELATIONSHIP MAPPING

• Network: Multiple associations to OVH-CUST-281059687
• DNS Hostname: proxy-ca008-san177.ahrefs.net (13 relationships)
• Campaign Correlations: None identified
• Certificate Matches: 0

---

## SECURITY RECOMMENDATIONS

Blocking Action: Recommended due to moderate risk score and high-abuse subnet context.

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 54.39.203.177 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.203.177 drop

# nginx

deny 54.39.203.177;

# pfSense

54.39.203.177/32

# Cloudflare WAF

Block 54.39.203.177 — IPDebrief risk score 40

# AWS WAF

Addresses: 54.39.203.177/32

Description: IPDebrief risk 40

```

Monitoring Priority: Medium

• Block immediately if traffic observed
• Monitor subnet 54.39.203.0/24 for correlated activity
• Review inbound traffic patterns from this subnet

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## ANALYST NOTES

This IP requires blocking despite lack of direct threat indicators because:

1. Subnet abuse density is 0.6641 (high)

2. 170 threat siblings in active subnet

3. Inherited risk score of 26

4. Cloud hosting environment frequently abused for proxy/tor services

The ahrefs.net DNS association suggests potential legitimate use, but the high-abuse subnet context warrants defensive blocking per SOC policy.

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*Report generated by IPDebrief Intelligence Platform*

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