51.89.129.118
IP Intelligence Briefing: 51.89.129.118
*Generated using IPDebrief threat intelligence tools*
---
**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (AS16276, OVH provider).
- Geolocation: London, UK (high confidence, 750km accuracy radius).
- Network Role: CloudCompute infrastructure (OVH), no residential/mobile indicators.
- Threat Indicators: No known malicious activity, no DNSBL listings, no spam/campaign associations.
---
**2. Network & Subnet Analysis**
- Subnet: 51.89.129.118/24
- Abuse Density: 62.5% (high abuse classification).
- Neighbor Risk: 160/256 siblings flagged as threats; 40% of subnet shows malicious activity.
- Key Neighbors:
- 51.89.129.0–4 (riskScore=40, authorityScore=50).
- 51.89.129.160–255 (high-risk siblings).
---
**3. Observational History**
- Last 30 Days:
- DNS resolution to `proxy-uk008-san118.ahrefs.net` (likely legitimate).
- Subnet abuse density increased from 0.5 to 0.625.
- No persistent malicious behavior detected.
---
**4. Relationships & Context**
- Linked Entities:
- OVH network (AS16276).
- Ahrefs Pte Ltd (hosting provider).
- DNS: PTR record points to `ahrefs.net`, no email auth (SPF/DKIM) detected.
- Control Plane:
- BGP prefix: 51.89.0.0/16 (OVH).
- DNSSEC valid, CAA records present.
---
**5. Actionable Insights**
- SOC Recommendation:
- Monitor the 51.89.129.0/24 subnet for lateral movement, given high abuse density.
- Verify if DNS activity (`ahrefs.net`) is part of legitimate operations.
- Block high-risk siblings (e.g., 51.89.129.160–255) if traffic to/from this IP is suspicious.
- Risk Mitigation:
- No immediate mitigation needed for this IP, but subnet-level monitoring is advised.
---
Conclusion: The IP is associated with a legitimate hosting provider but resides in a subnet with significant abuse activity. Prioritize monitoring the subnet and verify DNS/traffic legitimacy.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | — |
| CIDR Block | — |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-uk008-san118.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk008-san118.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 | 12% | 2 | 2 |
| ownership | 24% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:27 UTC |
| Last Seen | 2026-06-27 07:29:26 UTC |
| Profile Built | 2026-06-28 01:34:50 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 28 |
Full dossier details are available via our API.