# IP Intelligence Briefing: 51.38.51.166
Date: 2026-06-25
Classification: Low Risk / Hosting Infrastructure
---
## Executive Summary
IP 51.38.51.166 is a low-risk address hosted on OVH SAS infrastructure in France. The IP exhibits minimal threat indicators with a risk score of 25/100. The address is associated with VPS hosting services and presents no active exploitation indicators. SOC analysts should monitor but no immediate blocking action is warranted.
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## Ownership & Infrastructure Profile
| Attribute | Value |
|---|---|
| **IP Address** | 51.38.51.166/32 |
| **ASN** | AS16276 |
| **Organization** | OVH SAS |
| **Country** | France (FR) |
| **City/Region** | Paris Metro (inferred) |
| **Hostname** | vps-4f157c3f.vps.ovh.net |
| **Network Role** | Hosting / VPS Infrastructure |
| **Classification** | Cloud Provider VPS |
The IP is associated with OVH's French data center infrastructure (VPS-GRA). DNS reverse lookup confirms the hostname vps-4f157c3f.vps.ovh.net. Forward resolution is consistent with PTR records.
---
## Threat Assessment
Risk Indicators
- Overall Risk Score: 25 (Low)
- Reputation: Low Risk
- Abuse Confidence: Not elevated
- Threat Observations: 1 historical threat signal detected
- Blacklist Status: Listed on 1 of 8 DNSBLs
- Known Campaigns: None correlated
Threat Signals
Recent threat intelligence signals indicate:
- Associated with 14 threat pulses from AlienVault OTX
- One historical threat observation recorded
- No active campaign indicators
- Not identified as known attacker, spam source, or Tor exit node
Service Exposure
- Open Ports: None detected (firewalled or no services)
- TLS Certificates: None present
- HTTP Services: No active web services detected
---
## Network Neighborhood Analysis
| Metric | Value |
|---|---|
| **Subnet** | 51.38.51.166/24 |
| **Abuse Density** | 1 (low) |
| **Classification** | Mostly Clean |
| **Threat Siblings** | 1 |
| **Active Siblings** | 0 |
| **Total Siblings** | 1 |
The /24 subnet shows minimal abuse density. One threat-related sibling IP detected, suggesting potential infrastructure sharing. No immediate lateral threat vectors identified.
---
## Relationship Graph
| Relationship Type | Target |
|---|---|
| DNS Association | vps-4f157c3f.vps.ovh.net |
| Same Network | VPS-GRA |
| Same Network | OVH SAS infrastructure |
Additional relationships indicate association with OVH's broader VPS infrastructure network. No certificate-based relationships detected.
---
## Historical Observation Trend
Analysis of the last 20 signal observations reveals:
- Threat Signals: Detected June 25, 2026 at 16:48 UTC
- Geolocation Confidence: 52% (France)
- Operator Score: 0 (Minimal)
- Data Sufficiency: 6 of 6 dimensions covered
The IP demonstrates threat persistence for limited duration without evolving into sustained malicious activity. Ownership stability remains consistent with no changes observed.
---
## Recommended Actions
Immediate
- Monitor: No blocking required. Continue passive observation.
- Traffic Analysis: Review for any connection patterns to known C2 infrastructure.
- DNS Filtering: Standard DNS filtering recommended; IP not on critical blocklists.
Firewall Rules
- Allow inbound connections only from trusted sources
- Block direct inbound traffic from untrusted networks (standard practice)
- No specific iptables/nftables rules required at this time
SOC Monitoring
- Alert on unusual outbound connection patterns
- Monitor for DNS query anomalies
- Watch for connection attempts from known malicious internal IPs
---
## Conclusion
IP 51.38.51.166 is a legitimate OVH-hosted VPS address with minimal threat indicators. While listed on one DNSBL, the listing appears to be legacy or low-confidence. No active exploitation or campaign indicators are present. SOC teams should maintain standard monitoring protocols without special attention or blocking actions.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข Ownership & Registration
| Organization | OVH SAS |
| ASN | AS16276 |
| Network Name | โ |
| CIDR Block | โ |
| RIR | ARIN |
| Country | โ |
| Abuse Contact | Available via RDAP |
๐ DNS Intelligence
| PTR | vps-4f157c3f.vps.ovh.net |
| Forward Confirmed | Yes โ FCrDNS verified |
| Forward Hostnames | vps-4f157c3f.vps.ovh.net |
๐ DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
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 | |||
| 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 | 30% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 31% | 2 | 3 |
| Overall | 22% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-09 11:34:09 UTC |
| Last Seen | 2026-06-27 15:43:21 UTC |
| Profile Built | 2026-06-28 09:48:42 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 25 |
Full dossier details are available via our API.