51.161.37.76
IP Intelligence Dossier
Your IP: 216.73.216.123
🤖 Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
IP Intelligence Briefing: 51.161.37.76
Date: 2026-06-18
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Provider: OVH (ASN 16276)
- Organization: Dmytro, Ahrefs Pte Ltd (OVH-CUST-281059684)
- Geolocation: Registered to Singapore (CA), but geo validation failed due to inconsistent RTT (27ms vs. expected 121.6ms for 6082km).
- Network Role: CloudCompute (OVH hosting) with no open ports or TLS services detected.
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**2. Threat Indicators**
- No malicious indicators: No spam, Tor, or known attacker flags.
- DNS: Resolves to `proxy-ca005-san76.ahrefs.net` (linked to Ahrefs).
- Subnet Abuse: Subnet `51.161.37.0/24` has high abuse density (64.84%) with 166 threat siblings.
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**3. Observation History**
- Recent Signals:
- Minimal risk (operator score 0.2174) with low confidence.
- Geolocation anomalies: Persistent RTT discrepancies suggesting spoofing.
- Subnet analysis: High abuse density detected on 2026-06-14.
- No persistent threats: Threat observation count is 1, with no long-term malicious activity.
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**4. Relationships**
- Network Links:
- Same subnet (`51.161.37.0/24`) with 256 total IPs.
- Linked to OVH-CUST-281059684 (same ASN).
- Domain: Associated with `ahrefs.net` (no email auth records).
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**5. Neighborhood Analysis**
- Subnet Risk:
- 100 neighbors in `51.161.37.0/24` (40% medium/low risk).
- High abuse density (0.6484) with 166 IPs flagged as threats.
- Notable Neighbors:
- IPs like `51.161.37.0` (risk 50) and `51.161.37.1` (risk 40) show elevated risk.
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**6. Recommendations**
- Monitor Subnet: Investigate high-risk neighbors in `51.161.37.0/24` for potential lateral movement.
- Verify Legitimacy: Confirm Ahrefs’ use of this IP, as DNS resolves to a non-public hostname.
- Geolocation Anomalies: Flag for spoofing or misconfigured routing.
- Firewall Rules: Allow traffic to Ahrefs’ domain but block high-risk subnet IPs.
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Product: IPDebrief | Copyright: © 2026 Jason Alberino. All rights reserved.
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-281059684 |
| CIDR Block | 51.161.37.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca005-san76.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca005-san76.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
No certificate
Issued by —
N/A
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 26% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 22% | 10 | 15 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Claimed geolocation contradicts RTT physics measurement
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:25 UTC |
| Last Seen | 2026-06-27 06:20:04 UTC |
| Profile Built | 2026-06-28 00:24:02 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 29 |
🔍 23 signal types · 29 observations collected
This report is generated from 23+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
ℹ️ About This Report
All data shown is publicly available network metadata — IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.