51.222.168.154📋 Copy

# IPDEBRIEF INTELLIGENCE BRIEFING

Target IP: 51.222.168.154/32

Classification: MODERATE RISK - HIGH ABUSE SUBNET

Generated: [Current Date]

---

## EXECUTIVE SUMMARY

IP 51.222.168.154 operates on OVH infrastructure (ASN 16276) within the 51.222.168.0/24 subnet. The IP carries a risk score of 40 (Moderate Risk) and belongs to a subnet with 78.12% abuse density, classified as high_abuse. No active threat indicators, blacklists, or known campaigns were associated with this IP during analysis.

---

## OWNERSHIP & INFRASTRUCTURE

• Provider: OVH (Cloud Compute)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network Block: OVH-CUST-281059697, 51.222.168.0/24
• Registration: ARIN
• Infrastructure Type: Cloud Hosting
• Connection Type: Firewalled / No Services Detected

---

## GEOLOCATION DATA

• Consensus Location: CA (Canada), QC region, Singapore city
• Accuracy Radius: 3000 km
• Geolocation Confidence: 0.30 (Low-Medium)
• Geo Plausibility: False
• Note: Geographic data shows discrepancy between country code (CA) and city (Singapore)

---

## DNS & RESOLUTION

• PTR Hostname: proxy-ca018-san154.ahrefs.net
• Forward Resolution: proxy-ca018-san154.ahrefs.net
• Hosted Domain: ahrefs.net
• DNSSEC: Valid
• CAA Records: Present
• Forward Confirmation: Unverified

---

## THREAT INDICATORS

• Blacklist Count: 0
• DNSBL Listed Count: 1 (of 8 total lists)
• Known Campaigns: None
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Abuse Confidence Score: Not Available
• Pulsedive Risk: Not Available

---

## SUBNET NEIGHBORHOOD ANALYSIS

• Subnet: 51.222.168.0/24
• Abuse Density: 0.7812 (High)
• Classification: High Abuse
• Inherited Risk Score: 31
• Total Siblings: 256
• Active Siblings: 229
• Threat Siblings: 200
• Neighbor Risk Distribution: 100 Medium Risk, 0 High Risk, 0 Low Risk
• Sampled Neighbors: All 100 sampled IPs show consistent risk score of 40

---

## OBSERVATION HISTORY

• Total Observations: 21
• Threat Persistence Days: 0
• Ownership Changes: 0
• Recent Signals (June 2026):

- Provider identified as OVH

- Cloud infrastructure confirmed

- DNS resolution to ahrefs.net

- Minimal operator score (0.2174)

• Is Persistently Malicious: No

---

## NETWORK SERVICES

• Open Ports: None detected
• TLS Certificate: None
• HTTP Title: None
• Server Banner: None
• Service Purpose: Firewalled / No Services

---

## CONTROL PLANE DATA

• Origin ASN: 16276
• BGP Prefix: 51.222.0.0/16
• RPKI State: Not Available
• Route Stability: False
• IS Route Stable: False
• IS MOAS: False
• IRR Consistency: Not Available
• DNSSEC Valid: Yes
• Has CAA: Yes

---

## RELATIONSHIP GRAPH

• Total Relationships: 55
• Primary Relationships: Multiple entries for Same Network (OVH-CUST-281059697)
• Related Entities: Subnets, Organizations, Hostnames

---

## RECOMMENDED ACTIONS

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

iptables:

```

iptables -A INPUT -s 51.222.168.154 -j DROP

```

nftables:

```

nft add rule inet filter input ip saddr 51.222.168.154 drop

```

nginx:

```

deny 51.222.168.154;

```

pfSense:

```

51.222.168.154/32

```

Cloudflare WAF:

```json

{

"description": "Block 51.222.168.154 — IPDebrief risk score 40",

"action": "block",

"filter": {

"expression": "ip.src eq 51.222.168.154"

}

}

```

AWS WAF:

```json

{

"Addresses": ["51.222.168.154/32"],

"Description": "IPDebrief risk 40"

}

```

---

## INTELLIGENCE ASSESSMENT

The IP 51.222.168.154 exhibits characteristics of a legitimate hosting environment with DNS records pointing to ahrefs.net infrastructure. However, the subnet demonstrates high abuse density (78.12%), with 200 of 256 total siblings flagged as threats. The moderate risk score (40) combined with the high-abuse subnet classification warrants monitoring and potential blocking depending on organizational security posture. No active malware, scanning, or attack patterns were detected against this IP.

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