15.235.98.133
IP Intelligence Briefing: 15.235.98.133
Date: 2026-06-14
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Provider: OVH (ASN 16276)
- Ownership: Registered to Ahrefs Pte Ltd (Singapore)
- Geolocation: Singapore (geo-plausibility: false, likely misclassification)
- Network Role: Hosting (firewalled, no services exposed)
- Threat Indicators: No malicious activity, no blacklists, no known campaigns.
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**2. Observation History**
- Consistent Attributes:
- Cloud-hosted infrastructure (OVH)
- No Tor, VPN, or proxy activity
- Stable ownership (no recent changes)
- Key Findings:
- First observed June 6, 2026, with no persistent malicious behavior.
- Subnet (`15.235.98.0/24`) has moderate abuse density (0.4039).
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**3. Relationships**
- Linked Entities:
- OVH-CUST-281059698 (same network)
- Ahrefs.net (DNS resolver for `proxy-ca019-san133.ahrefs.net`)
- No Suspicious Links: No malicious domains, certificates, or threat feeds associated.
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**4. Neighborhood Analysis**
- Subnet: `15.235.98.0/24` (255 IPs)
- Risk Distribution:
- High Risk: 0 IPs
- Medium Risk: 46 IPs (46%)
- Low Risk: 54 IPs (54%)
- Notable Neighbors:
- 10 IPs with risk scores ≥40 (potential anomalies).
- Subnet abuse density: 0.4039 (moderate risk).
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**5. Actionable Insights**
- Monitor Subnet: The subnet has a moderate abuse density; monitor for unusual activity.
- Verify Geolocation: Geo-plausibility is false despite Singapore registration; investigate potential misclassification.
- Secure Hosting: Ensure the hosting environment (OVH) is configured to block unauthorized access.
- DNS Validation: Confirm `ahrefs.net` is authoritative for `proxy-ca019-san133.ahrefs.net` to avoid DNS spoofing.
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Conclusion:
15.235.98.133 is a low-risk IP associated with Ahrefs, a legitimate hosting provider. While no direct threats are detected, the subnet’s moderate abuse density and geo-plausibility discrepancy warrant further monitoring. No immediate mitigation is required, but ongoing surveillance is recommended.
Tools Used: `ipdebrief_profile`, `ipdebrief_history`, `ipdebrief_relationships`, `ipdebrief_neighbors`.
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-281059698 |
| CIDR Block | 15.235.98.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca019-san133.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san133.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 | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 21% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-12 15:46:44 UTC |
| Last Seen | 2026-06-27 21:32:46 UTC |
| Profile Built | 2026-06-28 15:38:29 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
Full dossier details are available via our API.