15.235.98.121
IP Intelligence Briefing: 15.235.98.121
Date: 2026-06-14
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Owned by OVH (AS16276), registered to Dmytro, Ahrefs Pte Ltd.
- Geolocation:
- Country: Canada (CA)
- City: Singapore
- Accuracy: 3000km radius (low confidence due to geolocation discrepancy).
- Network Role: Cloud compute instance (OVH infrastructure).
- Threat Indicators: No malicious activity detected (no DNS abuse, blacklists, or campaigns).
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**2. Observation History**
- Recent Activity (30 Days):
- RTT Anomalies: Observed 31ms latency, which is inconsistent with 6082km distance (minimum possible RTT: 121.6ms).
- Subnet Abuse Density: 39.13% (moderate risk in the 15.235.98.0/24 subnet).
- Stability: 0 route changes in 30 days, but route stability is flagged as unverified.
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**3. Relationships & Subnet**
- Network Relationships:
- Linked to OVH-CUST-281059698 (same ASN).
- Associated with ahrefs.net (PTR record: `proxy-ca019-san121.ahrefs.net`).
- Subnet Analysis (15.235.98.0/24):
- Total IPs: 253
- Active IPs: 180
- Threat IPs: 99 (17 medium-risk, 82 low-risk).
- Abuse Density: 39.13% (mixed classification).
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**4. Security Actions**
- Recommended Mitigations:
- Firewall Rules: Block IPs with high-risk scores in the subnet (e.g., 15.235.98.1–15.235.98.100).
- Monitoring: Track subnet abuse density and validate geolocation accuracy.
- DNS: Monitor `ahrefs.net` for DNS misconfigurations or spoofing.
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**5. Key Takeaways**
- Low Risk: The IP itself is not malicious, but its subnet has moderate abuse density.
- Geolocation Discrepancy: Conflicting location data (Canada vs. Singapore) may indicate misconfiguration or spoofing.
- Cloud Infrastructure: Likely a legitimate server for Ahrefs, but subnet neighbors require closer scrutiny.
Next Steps: Validate geolocation data, monitor subnet activity, and ensure DNS configurations are secure.
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Source: IPDebrief Threat Intelligence Platform
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-san121.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san121.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 | 28% | 1 | 3 |
| geolocation | 35% | 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 23:03:46 UTC |
| Last Seen | 2026-06-27 00:19:53 UTC |
| Profile Built | 2026-06-27 14:33:53 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 30 |
Full dossier details are available via our API.