51.222.95.248📋 Copy

# IP Intelligence Briefing: 51.222.95.248

## Executive Summary

IP address 51.222.95.248 was analyzed as a cloud hosting infrastructure endpoint with moderate risk characteristics. The IP operates within OVH's Canadian datacenter infrastructure under Ahrefs Pte Ltd's customer allocation (OVH-CUST-281059689). No active threat indicators were detected, but the subnet exhibits elevated abuse density consistent with shared hosting environments.

## Risk Assessment

The IP received an overall risk score of 40, classified as "Moderate Risk." The risk profile shows no provider or authority score contributions, indicating the threat assessment is derived primarily from network classification and geolocation signals rather than known malicious attribution. The IP is not associated with known campaigns, Tor networks, or spam infrastructure.

## Ownership and Infrastructure

Network Classification:

• ASN: 16276 (OVH)
• Organization: Ahrefs Pte Ltd
• CIDR Block: 51.222.95.0/24
• Infrastructure Type: CloudCompute
• Role: Hosting provider with firewalled/no services detected

Geolocation Signals:

The geolocation data showed significant validation anomalies. Multiple sources reported Canada (CA) as the country of origin, though the city field returned "Singapore" — a geographical inconsistency. RTT-based validation failed with measured latency of 28ms against the minimum possible 112ms for the reported distance of 5,598km. The geoPlausible flag was set to false, indicating the location data cannot be reliably validated.

## Network Neighborhood Analysis

The /24 subnet (51.222.95.0/24) was classified as "high_abuse" with an abuse density score of 0.5508. Key metrics include:

• Total sibling IPs: 256
• Active siblings: 237
• Threat siblings: 141
• Inherited risk score: 22

Risk distribution across the subnet showed 100 medium-risk neighbors and zero high-risk neighbors. This pattern is consistent with commercial hosting environments where multiple tenant IPs share infrastructure.

## DNS and Services

DNS Resolution:

• PTR Hostname: proxy-ca010-san248.ahrefs.net
• Forward resolution: proxy-ca010-san248.ahrefs.net
• Domain: ahrefs.net

Services:

No open ports were detected. The IP shows no active HTTP/HTTPS services, TLS certificates, or web server banners. This "firewalled/no services" state suggests the IP may be used for network infrastructure, management purposes, or represents a dormant allocation.

## Threat Indicators

The threat assessment returned clean indicators:

• Blacklist count: 0
• DNSBL listed count: 1 (total lists: 8)
• Known attacker: false
• Spam source: false
• Tor exit: false
• Campaign likelihood: none
• Correlated IPs: 0

## Observation History

Signal observation history captured 22 observations with the most recent recorded on 2026-06-26. Historical signals consistently reported the same subnet abuse density (0.5508) and high_abuse classification. Ownership changes remained at zero, indicating stable allocation over the observation period.

## Relationship Graph

The relationship graph contained 45 relationships, all classified as "Same Network" targeting the network identifier OVH-CUST-281059689. No relationships to external organizations, hostnames, or certificates were identified.

## Recommended Actions

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

iptables:

```

iptables -A INPUT -s 51.222.95.248 -j DROP

```

nftables:

```

nft add rule inet filter input ip saddr 51.222.95.248 drop

```

nginx:

```

deny 51.222.95.248;

```

Cloudflare WAF:

```json

{

"description": "Block 51.222.95.248 — IPDebrief risk score 40",

"action": "block",

"filter": {

"expression": "ip.src eq 51.222.95.248"

}

}

```

AWS WAF:

```json

{

"Addresses": ["51.222.95.248/32"],

"Description": "IPDebrief risk 40"

}

```

## Intelligence Note

This IP belongs to a high-abuse-density subnet operating under Ahrefs' hosting infrastructure. While no direct threat indicators were present, the neighborhood context suggests potential for abuse in shared hosting environments. The geolocation data validation failure and inconsistent country/city reporting warrant additional verification before establishing definitive attribution. Recommended monitoring should focus on activity patterns within the broader 51.222.95.0/24 subnet rather than isolated IP-level blocking.

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