IP Intelligence Briefing: 15.235.27.209
*Last Updated: 2026-06-01*
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**1. Risk Profile**
- Overall Risk Score: 50 (Moderate Risk)
- Ownership:
- ISP: OVH (ASN 16276)
- Organization: Dmytro, Ahrefs Pte Ltd
- Network: OVH-CUST-281059692
- Geolocation:
- Country: Canada (CA)
- City: Singapore (discrepancy noted; geo validation flagged as implausible)
- Coordinates: 56.13°N, -106.35°W (claimed, but RTT suggests Asia-Pacific origin)
- Distance from Probe: 6,082 km (RTT: 27ms, inconsistent with distance)
- Threat Indicators:
- No known malicious activity, spam, or campaigns.
- DNSBL Listings: 2/8 (moderate risk).
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**2. Network & Infrastructure**
- Network Role:
- Cloud Hosting: Part of OVH's cloud infrastructure (OVH-CUST-281059692).
- Subnet: 15.235.27.209/24 (abuse density: 41.27%).
- Services:
- No open ports or TLS certificates detected.
- DNS PTR record: `proxy-ca013-san209.ahrefs.net` (linked to Ahrefs, an SEO tool).
- Control Plane:
- BGP Prefix: 15.235.0.0/17
- Route Stability: Unstable (route changes in last 30 days).
- DNSSEC Valid: Yes.
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**3. Observation History**
- Recent Activity (Last 30 Days):
- Network Classification: Mixed (16 inherited risk points).
- Geo Validation: Flagged for implausible RTT (27ms) vs. 6,082 km distance.
- DNSBL Listings: 2/8 (moderate risk).
- Subnet Abuse Density: 41.27% (104/252 siblings flagged as threats).
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**4. Relationships & Neighbors**
- Key Relationships:
- Same Network: OVH-CUST-281059692.
- DNS Associations: Multiple links to `proxy-ca013-san209.ahrefs.net`.
- Neighboring IPs (15.235.27.0/24):
- Total Siblings: 252
- Threat Siblings: 104 (42 medium risk, 58 low risk).
- Abuse Density: 41.27% (moderate risk).
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**5. Recommendations**
- Monitoring:
- Track DNS traffic to `proxy-ca013-san209.ahrefs.net` for anomalies.
- Monitor RTT consistency for potential spoofing or data center activity.
- Mitigation:
- Consider rate limiting or blocking DNSBL-listed IPs in the subnet.
- Validate geolocation data for discrepancies (e.g., Singapore vs. Canada).
- Investigation:
- Cross-reference with Ahrefs' infrastructure to confirm legitimacy.
- Review subnet abuse patterns for potential collateral risk.
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*Note: This IP is associated with a legitimate cloud hosting provider but exhibits geo-validation inconsistencies and moderate DNSBL risk. Further investigation into its DNS and network behavior is advised.*
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-281059692 |
| CIDR Block | 15.235.27.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | โ |
๐ DNS Intelligence
| PTR | proxy-ca013-san209.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca013-san209.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 | 29% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 39% | 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 | 2026-05-21 14:56:16 UTC |
| Last Seen | 2026-06-28 13:42:19 UTC |
| Profile Built | 2026-06-29 07:49:49 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 25 |
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