Threat Intelligence Briefing: IP 54.39.203.91/32
Overview:
The IP address 54.39.203.91/32, located in the United States, was observed engaging in activities associated with a known cloud service provider. This IP address is part of a larger cloud infrastructure commonly used for legitimate enterprise services, including web hosting, application delivery, and virtual machine provisioning.
Observation History:
- Data Source Analysis: Multiple sources confirmed that this IP address is associated with a global cloud service provider's data center. The address has been consistently categorized as part of a cloud network.
- Network Traffic Patterns: Historical network traffic data indicated typical cloud-based communication patterns, including high-volume data transfers and API interactions typical of cloud service usage.
- Malware and Threat Reports: There were no direct associations with malicious activities or malware campaigns linked specifically to this IP address. However, related IPs within the same cloud network have occasionally been implicated in phishing campaigns and other cyber threats.
Relationships and Context:
- Cloud Provider Affiliation: The IP belongs to a major cloud service provider, which is known for offering Infrastructure as a Service (IaaS) solutions. The provider's network is extensive and includes a wide range of IP addresses used for various services.
- Network Proximity: Neighboring IP addresses are also part of the same cloud provider's network, supporting similar services and exhibiting comparable traffic patterns.
Security Considerations:
- Legitimate Use: The IP is primarily used for legitimate purposes, supporting cloud infrastructure and services. However, the nature of cloud environments can be exploited by adversaries to mask malicious activities.
- Potential Misuse: While the specific IP has no direct malicious history, its association with a cloud provider means that it could be used in sophisticated attack vectors, such as Command and Control (C2) communications, if compromised.
- Recommendations:
- Monitoring: Implement enhanced monitoring for any anomalous traffic originating from or targeting this IP, particularly if it deviates from typical cloud service patterns.
- Threat Intelligence Updates: Regularly update threat intelligence feeds to capture any new associations with this IP that might indicate a shift towards malicious use.
- Incident Response Preparedness: Ensure that incident response plans are in place to quickly address any potential misuse of cloud infrastructure, including this IP address.
Conclusion:
The IP address 54.39.203.91/32 is part of a legitimate cloud service provider's network, primarily used for standard cloud operations. While there is no direct evidence of malicious activity, the inherent nature of cloud environments necessitates vigilant monitoring and preparedness for potential exploitation. SOC teams should remain alert to any deviations from normal traffic patterns and update threat intelligence accordingly.
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-281059687 |
| CIDR Block | 54.39.203.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | โ |
๐ DNS Intelligence
| PTR | proxy-ca008-san91.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca008-san91.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 | 26% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 20% | 2 | 3 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 32% | 2 | 3 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Mostly Consistent (80%) โ 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-07 23:04:29 UTC |
| Last Seen | 2026-06-27 08:27:52 UTC |
| Profile Built | 2026-06-28 02:34:00 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 26 |
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