15.235.98.206
IP Intelligence Briefing: 15.235.98.206
Date: 2026-06-15
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**1. Risk Profile**
- Overall Risk: Moderate (Risk Score: 50)
- Ownership: Owned by Ahrefs Pte Ltd (OVH ASN 16276).
- Geolocation: Reported as Singapore (CA), but geo-plausibility is false (RTT 27ms vs. expected 121.6ms for 6082km).
- Network Role: Cloud compute infrastructure (OVH), no services detected.
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**2. Threat Indicators**
- DNS Associations: Linked to proxy-ca019-san206.ahrefs.net (Ahrefs subdomain).
- DNSBL Listings: Listed in 2/8 DNSBLs (high-severity risk).
- Traceroute Anomalies: Observed RTT (27ms) inconsistent with reported location, suggesting potential spoofing or proxy use.
- Subnet Abuse: Subnet 15.235.98.0/24 has 45% abuse density, with 115/255 IPs flagged as threats.
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**3. Observation History**
- Recent Activity:
- June 15: Traceroute anomalies (RTT 27ms).
- June 9: DNS resolution for `proxy-ca019-san206.ahrefs.net` (valid DNSSEC).
- June 9: 2 DNSBL listings (high-severity).
- Trend: No significant changes in risk signals over 30 days.
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**4. Network Relationships**
- Key Links:
- OVH-CUST-281059698 (network)
- proxy-ca019-san206.ahrefs.net (hostname)
- Subnet Neighbors:
- 199 active IPs in 15.235.98.0/24.
- 115 IPs flagged as threats (66 medium-risk, 34 low-risk).
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**5. Actionable Insights**
- Monitor: Track DNSBL listings and subnet abuse density. Investigate geo-plausibility discrepancies.
- Verify: Confirm Ahrefs’ ownership of the subnet and validate DNS associations.
- Mitigate:
- Block high-risk neighbors in the 15.235.98.0/24 subnet.
- Consider rate-limiting or blocking traffic from this subnet if suspicious.
- Investigate: Check if the low RTT anomaly is part of a spoofing campaign or misconfigured routing.
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Threat Level: Moderate (requires monitoring for potential spoofing or abuse).
Recommended Next Steps: Validate DNS and network ownership, monitor subnet activity, and review DNSBL status.
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-san206.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca019-san206.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 | 15% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 39% | 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 | 2026-05-22 03:08:35 UTC |
| Last Seen | 2026-06-28 17:09:37 UTC |
| Profile Built | 2026-06-29 05:13:13 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 25 |
Full dossier details are available via our API.