51.222.168.144
IP Intelligence Briefing: 51.222.168.144/32
*Generated via IPDebrief Threat Intelligence Platform*
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276)
- Geolocation:
- Country: Canada (CA)
- City: Singapore (inferred via DNS data)
- RTT Anomaly: 26ms observed, inconsistent with 5598km distance (minimum plausible RTT: 112ms)
- Network Role: Cloud infrastructure (OVH-hosted, no residential/mobile signals)
- Threat Indicators: No malicious indicators, no blacklisted domains, no spam/CVE associations
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**2. Network & Subnet Analysis**
- Subnet: 51.222.168.0/24
- Abuse Density: 56.75% (High Abuse Classification)
- Neighbor Risk:
- Total Siblings: 252 IPs
- Active Siblings: 203
- Threat Siblings: 143 (medium/high risk)
- Inherited Risk: 22 (substantial exposure via shared subnet)
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**3. Historical Observations**
- First Seen: 2026-06-08
- Key Trends:
- No persistent malicious activity (threat observation count: 1)
- Geolocation spoofing suspected (RTT inconsistency)
- Operator score: Minimal (0.2174)
- Subnet stability: Unstable (route changes last 30 days)
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**4. Relationships & Dependencies**
- Linked Entities:
- DNS: `proxy-ca018-san144.ahrefs.net` (PTR record)
- Network: OVH-CUST-281059697 (CIDR: 51.222.168.0/24)
- Threat Feeds: No direct matches
- DNSSEC/CAA: Valid records detected; 1 DNSBL listing (low confidence)
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**5. SOC Actionable Insights**
- Monitor Subnet: High abuse density in 51.222.168.0/24 warrants scrutiny for lateral movement or shared infrastructure risks.
- Verify Geolocation: Investigate RTT anomaly (26ms vs. 5598km distance) for spoofing or misconfigured routing.
- Check DNS Configuration: Confirm legitimacy of `proxy-ca018-san144.ahrefs.net` and ensure no unintended exposure.
- Baseline Neighbor Activity: Track medium-risk neighbors for potential compromise or coordinated attacks.
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*Generated by IPDebrief. Data reflects observations up to 2026-06-08.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Dmytro, Ahrefs Pte Ltd |
| ASN | AS16276 |
| Network Name | OVH-CUST-281059697 |
| CIDR Block | 51.222.168.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca018-san144.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca018-san144.ahrefs.net |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 30% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 22% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-18 09:25:03 UTC |
| Last Seen | 2026-06-28 07:15:28 UTC |
| Profile Built | 2026-06-29 07:20:33 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 27 |
Full dossier details are available via our API.