104.41.163.91
Intelligence Briefing for IP Address: 104.41.163.91/32
Summary:
The IP address 104.41.163.91/32 is associated with Microsoft Corporation (AS8075) and is part of Microsoft Azure's cloud infrastructure. It is geolocated to Tokyo, Japan and classified as a cloud compute node with no open ports or TLS services detected.
Key Findings:
1. Ownership & Provider:
- Owned by Microsoft Corporation (AS8075).
- Part of Microsoft Azure's infrastructure, likely a firewalled server.
- No recent ownership changes or threats detected.
2. Risk Assessment:
- Moderate Risk Score (50), but no malicious indicators (no malware, spam, or known attacker activity).
- Stability: Stable ownership and no recent route changes.
- Threat Indicators: Zero abuse confidence score, no DNSBL listings, and no correlated threats.
3. Network Behavior:
- No open services or TLS certificates observed.
- Cloud-Only: Identified as a cloud compute node with no residential/mobile carrier ties.
- Subnet Analysis: No neighboring IPs detected in the /24 subnet (abuse density: 0%).
4. Historical Observations:
- Consistent "clean" classification over the last 30 days.
- No spikes in threat signals or DNS anomalies.
Actionable Insights:
- No immediate mitigation required for this IP, as it appears to be a legitimate Microsoft Azure resource.
- Monitor for unexpected service creation or port openings if this IP is exposed to external traffic.
- Cross-reference with internal threat feeds to ensure no false negatives.
Recommendation:
Allow traffic unless this IP is explicitly flagged in internal threat intelligence. No firewall rules or WAF configurations are recommended based on current data.
Source: IPDebrief Threat Intelligence Platform.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Microsoft Corporation |
| ASN | AS8075 |
| Network Name | MSFT |
| CIDR Block | 104.40.0.0/13 |
| RIR | ARIN |
| Country | United States |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
🔐 DNS Hygiene
| Hygiene Score | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ 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
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 36% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 18% | 1 | 2 |
| geolocation | 34% | 2 | 3 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-26 06:49:44 UTC |
| Last Seen | 2026-06-29 02:38:01 UTC |
| Profile Built | 2026-06-29 08:40:02 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 21 |
Full dossier details are available via our API.