54.39.210.17
IP Intelligence Briefing: 54.39.210.17
Date: 2026-06-10
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Owner: Ahrefs Pte Ltd (OVH-CUST-281059686)
- Geolocation: Canada (QC, Beauharnois) – Geo Plausibility: False (RTT anomaly detected)
- Network Role: Cloud Hosting (OVH infrastructure)
- Threat Indicators: No active malicious signals, no blacklist entries, no known campaigns.
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**2. Network & Subnet Analysis**
- Subnet: 54.39.210.0/24
- Abuse Density: 50.2% (High Abuse Classification)
- Neighbor Risk:
- 94% of siblings rated Medium Risk (40–50 score).
- 6% rated Low Risk (0–20 score).
- Inherited Risk: 20 (substantial peer risk).
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**3. Observational History**
- Recent Activity (Last 30 Days):
- No persistent malicious behavior detected.
- Subnet abuse density increased to 50.2% (high-risk classification).
- Geolocation anomalies persist (RTT mismatch for distance).
- Stability: Route instability detected (fluctuating BGP prefix).
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**4. Relationships & DNS**
- DNS Associations:
- Linked to `proxy-ca007-san17.ahrefs.net` (Ahrefs infrastructure).
- No email authentication (SPF/DKIM/DMArC not configured).
- Network Relationships:
- Same ASN (OVH, ASN 16276).
- No direct ties to known malicious organizations or campaigns.
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**5. Recommendations**
- Monitoring:
- Watch subnet 54.39.210.0/24 for increased abuse activity.
- Validate geolocation accuracy; investigate RTT anomalies.
- Mitigation:
- Consider blocking traffic to this subnet if internal policies restrict access to OVH networks.
- Ensure DNS configurations for `proxy-ca007-san17.ahrefs.net` are secure.
- Further Investigation:
- Verify if the IP is legitimately used by Ahrefs or if it’s compromised.
- Check for lateral movement risks within the subnet.
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Threat Level: Moderate (substantial peer risk, geolocation inconsistencies).
Action Required: SOC teams should prioritize monitoring and validate the IP’s legitimacy.
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-281059686 |
| CIDR Block | 54.39.210.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca007-san17.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca007-san17.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 | |||
| 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 | 32% | 2 | 2 |
| routing | 8% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 23% | 1 | 2 |
| geolocation | 27% | 2 | 3 |
| Overall | 19% | 9 | 11 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-25 00:41:43 UTC |
| Last Seen | 2026-06-29 01:05:39 UTC |
| Profile Built | 2026-06-29 07:08:57 UTC |
| Data Freshness | Live |
| Signal Types | 19 |
| Total Observations | 21 |
Full dossier details are available via our API.