IP Intelligence Briefing: 15.235.98.23/32
Date: 2026-06-17
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276) under subnet 15.235.98.0/24.
- Geolocation:
- Country: Canada (CA)
- City: Singapore (geo validation flagged as implausible due to RTT inconsistency).
- Network Role: Cloud compute infrastructure (OVH-hosted, no public services).
- Threat Indicators: No malicious activity detected (zero threat feeds, spam, or known attacker associations).
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**2. Observation History (Last 20 Days)**
- Geolocation Consistency: Mixed signals (some probes show CA/Singapore, others unresolved).
- Network Stability: BGP route instability detected (route changes, low stability score).
- Subnet Abuse: Subnet 15.235.98.0/24 has 50.39% abuse density, with 129 threat-sibling IPs.
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**3. Relationships & Context**
- Linked Entities:
- OVH-CUST-281059698 (same network).
- DNS: PTR hostname `proxy-ca019-san23.ahrefs.net` resolves to Ahrefs' domain.
- Certificates: No TLS certificates or HTTP services detected.
- Subnet Neighbors:
- 100 IPs in 15.235.98.0/24; 96 medium-risk, 4 low-risk.
- Inherited Risk: 20% due to subnet abuse density.
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**4. Actionable Insights**
- No Direct Threat: No malware, spam, or attacker associations detected.
- Monitor Subnet: Elevated abuse density in the subnet warrants closer scrutiny for lateral movement or compromised hosts.
- Verify Geolocation: Investigate geo validation anomalies (RTT mismatch).
- Cloud Security: Ensure Ahrefs' cloud instance adheres to compliance standards, given OVH's hosting role.
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Recommendation: Maintain standard monitoring for the subnet. No immediate mitigation required, but prioritize subnet-level threat hunting.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข 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 | โ |
๐ DNS Intelligence
| PTR | proxy-ca019-san23.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san23.ahrefs.net |
๐ DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
โ๏ธ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting โ Infrastructure provider without advanced routing |
๐ 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 | โ |
| HTTP Title | โ |
๐ TLS Certificate
| SANs | None |
| Valid From | โ |
| Valid Until | โ |
๐ฏ Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 24% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) โ 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-07 23:03:46 UTC |
| Last Seen | 2026-06-27 00:26:25 UTC |
| Profile Built | 2026-06-27 14:39:35 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 28 |
Full dossier details are available via our API.