15.235.98.159
IP Intelligence Briefing: 15.235.98.159
*Generated for SOC Analysts*
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**1. Core Profile**
- Risk Score: Moderate (50/100)
- Provider: OVH (AS16276)
- Organization: Ahrefs Pte Ltd (OVH-CUST-281059698)
- Geolocation:
- Country: Canada (CA)
- City: Singapore (discrepancy noted; RTT suggests geographic inconsistency)
- Coordinates: Latitude 56.13, Longitude -106.35 (approx. 6,082km from reported location)
- Network Role: Cloud Compute (OVH-hosted, no residential/mobile traffic)
- Threat Indicators: No malicious activity detected (no abuse confidence scores, blacklists, or campaigns).
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**2. Network Context**
- Subnet: 15.235.98.159/24
- Subnet Risk: High abuse density (0.5039), 20% inherited risk.
- Neighbors:
- 100 total IPs in subnet.
- 96 medium-risk, 4 low-risk neighbors.
- No high-risk IPs detected.
- Control Plane:
- DNSSEC and CAA records validated.
- 2 DNSBL listings (out of 8 total lists).
- BGP prefix: 15.235.0.0/17 (OVH route).
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**3. Historical Observations**
- Recent Activity:
- Subnet abuse density classified as "high_abuse" (0.5039).
- Geolocation anomalies: RTT (27ms) inconsistent with 6,082km distance.
- Network role stable: Cloud compute infrastructure.
- Temporal Trends:
- No persistent malicious activity (0 threat persistence days).
- Single observation recorded (last 30 days).
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**4. Relationships & Dependencies**
- Network Relationships:
- Linked to OVH-CUST-281059698 (same network).
- DNS PTR records point to `proxy-ca019-san159.ahrefs.net`.
- Hosting:
- Likely part of Ahrefs' cloud infrastructure (proxy server).
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**5. Recommendations**
- Monitor Subnet: High abuse density in 15.235.98.0/24 warrants ongoing scrutiny.
- Verify Geolocation: Investigate RTT discrepancy (27ms vs. 6,082km).
- Secure DNS: Ensure DNSSEC and CAA records are enforced to mitigate spoofing risks.
- Cloud Configuration: Confirm Ahrefs' cloud services are properly segmented and secured.
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Conclusion: The IP is part of a cloud infrastructure operated by OVH for Ahrefs, with no direct malicious indicators. However, the subnet's high abuse density and geolocation anomalies suggest potential spoofing or misconfigured routing. SOC teams should prioritize subnet-level monitoring and validate DNS integrity.
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-san159.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san159.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 | 29% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 23% | 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 00:22:14 UTC |
| Profile Built | 2026-06-27 14:36:06 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 26 |
Full dossier details are available via our API.