IP Intelligence Briefing: 51.195.183.111
Date: 2026-06-14
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**1. Core Profile**
- Risk Score: Moderate (40/100)
- Provider: OVH (ASN 16276)
- Organization: Ahrefs Pte Ltd (SEO/Hosting)
- Geolocation: London, England, UK (Residential)
- Network Role: Cloud compute infrastructure (OVH)
Threat Indicators:
- No malicious activity detected (no malware, phishing, or C2 indicators).
- Not listed in DNSBLs or threat feeds.
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**2. Network & Subnet Analysis**
- Subnet: 51.195.183.111/24
- Subnet Abuse Density: 60.94% (high abuse classification)
- Neighbor Risk: 97% of sibling IPs in the subnet are medium/low risk; 3% are high risk.
- Key Neighbors:
- 51.195.183.0β3: Moderate risk (40/100).
- 51.195.183.4β100: Mixed risk profile.
Note: While the subnet has a high abuse density, the IP itself shows no direct malicious signals.
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**3. Historical Observations**
- First Seen: 2026-06-06
- Risk Trend: Stable (minimal risk score consistently).
- Geolocation Consistency: Plausible (London, UK).
- DNS Stability: No abrupt changes in DNS records.
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**4. Relationships & Dependencies**
- Linked Entities:
- Hostname: `proxy-uk003-san111.ahrefs.net` (Ahrefs infrastructure).
- Network: OVH network (ASN 16276).
- Subnet: 51.195.0.0/16 (OVH-managed).
- No Known Malicious Associations: No correlated IPs or campaigns detected.
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**5. Actionable Insights**
- No Immediate Threat: The IP is part of a legitimate hosting environment with no malicious signals.
- Monitor Subnet: High abuse density in the subnet warrants closer scrutiny of neighboring IPs.
- Verify Ownership: Confirm Ahrefsβ infrastructure is not being repurposed for malicious use.
- Baseline Behavior: Use historical data to detect anomalies in future observations.
Recommendation: No blocking required. Focus on subnet-level risk mitigation and verify Ahrefsβ compliance with hosting security standards.
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Source: IPDebrief Threat Intelligence Platform | © 2026 Jason Alberino.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | β |
| CIDR Block | β |
| RIR | ARIN |
| Country | β |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR | proxy-uk003-san111.ahrefs.net |
| Forward Confirmed | No β PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk003-san111.ahrefs.net |
π DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
βοΈ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting β Infrastructure provider without advanced routing |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 26% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 17% | 2 | 3 |
| ownership | 20% | 2 | 3 |
| reputation | 31% | 1 | 3 |
| geolocation | 31% | 2 | 3 |
| Overall | 22% | 10 | 17 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-05-11 21:44:39 UTC |
| Last Seen | 2026-06-27 20:25:35 UTC |
| Profile Built | 2026-06-28 20:31:00 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 30 |
Full dossier details are available via our API.