51.222.168.71
IP Intelligence Briefing for 51.222.168.71/32
*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:
- Claimed: Canada (CA), Quebec (QC), Singapore.
- Validation: RTT (28ms) inconsistent with 5598km distance (min. plausible RTT: 112ms).
- Network Role:
- Cloud Hosting: Part of OVH's cloud infrastructure.
- No Open Services: No active ports, TLS certs, or HTTP services detected.
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**2. Threat Indicators**
- No Direct Threats: No malware, phishing, or spam indicators.
- Subnet Risk:
- Abuse Density: 66.8% (High Risk).
- Threat Neighbors: 171 malicious IPs in the 51.222.168.0/24 subnet.
- Geolocation Anomalies:
- RTT discrepancy suggests potential spoofing or misconfigured routing.
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**3. Network Relationships**
- Subnet: 51.222.168.0/24 (OVH-CUST-281059697).
- Linked Entities:
- Domain: `ahrefs.net` (PTR: `proxy-ca018-san71.ahrefs.net`).
- DNS: No SPF/DKIM records; no email authentication.
- BGP: Route stability flagged as unstable (route changes in 30d).
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**4. Observation History**
- Latest Activity: June 14, 2026.
- Trend:
- Subnet abuse density has remained stable at 66.8% over 30 days.
- Geolocation inconsistencies persist.
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**5. Recommendations**
- Monitor Subnet: High abuse density in 51.222.168.0/24 warrants continuous monitoring.
- Verify Geolocation: Investigate RTT discrepancy; consider spoofing or routing anomalies.
- Network Segmentation: Isolate traffic from this subnet if it resides within your network.
- DNS Validation: Confirm Ahrefs' DNS configuration for potential misconfigurations.
Note: While the IP itself is not malicious, its subnet’s high-risk profile and geolocation anomalies require further investigation.
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*Generated by IPDebrief | Copyright © 2026 Jason Alberino. All rights reserved.*
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-san71.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca018-san71.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 | 26% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 32% | 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 | 2026-05-07 23:04:26 UTC |
| Last Seen | 2026-06-27 06:58:58 UTC |
| Profile Built | 2026-06-28 01:05:09 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 27 |
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