15.235.98.104
## IP INTELLIGENCE BRIEFING: 15.235.98.104/32
Classification: Moderate Risk Infrastructure | Date: 2026-06-28
Status: Active Monitoring | Threat Level: Low-Medium
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**EXECUTIVE SUMMARY**
Target IP 15.235.98.104 operates on OVH cloud infrastructure (ASN 16276) within the 15.235.98.0/24 subnet. Currently classified as moderate risk (score: 40) with no active threat indicators. Subnet exhibits elevated abuse density (0.7188) with 184 threat-sibling IPs identified. No open ports or services detected; IP appears firewalled.
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**INFRASTRUCTURE PROFILE**
| Attribute | Value |
|---|---|
| **Organization** | Dmytro, Ahrefs Pte Ltd |
| **Network** | OVH-CUST-281059698 (15.235.98.0/24) |
| **ASN** | 16276 |
| **Geolocation** | Singapore (CA registry) |
| **Infrastructure** | Cloud Compute / Hosting |
| **DNS** | proxy-ca019-san104.ahrefs.net |
| **Ports/Services** | None (firewalled) |
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**RISK ASSESSMENT**
- Overall Risk Score: 40 (Moderate)
- Provider/Authority Scores: 0/0 (neutral)
- Abuse Confidence: Not flagged
- Blacklist Status: Clean (0 blacklist entries)
- Campaign Association: None detected
- Tor/Proxy Status: Negative
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**NEIGHBORHOOD ANALYSIS**
- Subnet: 15.235.98.0/24
- Abuse Density: 0.7188 (High)
- Threat Siblings: 184 / 246 active IPs
- Classification: High Abuse
- Inherited Risk: 28
- Neighbor Risk Distribution: 100 medium-risk IPs, 0 high/low
Action: Subnet-level monitoring recommended; correlate traffic with 184 identified threat siblings.
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**OBSERVATION HISTORY**
- Total Signals: 21 observations
- Recent Activity: Minimal risk signals (confidence: 0.20-0.30)
- Ownership Stability: Stable (0 changes)
- Threat Persistence: 0 days (no persistent malicious activity)
- Geolocation Consensus: Mixed (geoPlausible: false; RTT violation detected)
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**RELATIONSHIP GRAPH**
- Total Relationships: 42
- Primary Association: Same network (OVH-CUST-281059698)
- External Links: None detected
- Certificate/Hostname Associations: Single ahrefs.net proxy hostname
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**RECOMMENDED ACTIONS**
1. Firewall Policy:
- Allow only necessary egress; block unsolicited inbound connections
- No open ports detected; monitor for service exposure
2. Monitoring:
- Add to watchlist for subnet abuse correlation
- Monitor DNS traffic for proxy-ca019-san104.ahrefs.net
3. Investigation Triggers:
- Subnet abuse density exceeds threshold (0.7188)
- 184 threat siblings in /24 block require correlation
- Geolocation inconsistency (Singapore/CA) warrants validation
4. No Immediate Block Recommended:
- No active threat indicators
- IP not flagged as attacker/spam source
- Clean blacklist status
---
**INTELLIGENCE NOTE**
While the individual IP shows minimal risk, the subnet's elevated abuse density suggests shared infrastructure may be leveraged by threat actors. Recommend applying subnet-level controls and monitoring for lateral movement patterns within the 15.235.98.0/24 block.
Confidence Level: Medium
Data Sources: IPDebrief Intelligence Platform
Last Updated: 2026-06-28
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-san104.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san104.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 | 33% | 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 | 2026-05-21 14:56:16 UTC |
| Last Seen | 2026-06-28 13:48:21 UTC |
| Profile Built | 2026-06-29 07:53:17 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
Full dossier details are available via our API.