4.193.121.6
IP Intelligence Briefing: 4.193.121.6
Date: 2026-06-03
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Microsoft Corporation (ASN 8075)
- Geolocation: Singapore (1.35°N, 103.82°E), plausible with 150km accuracy radius.
- Network Role: Microsoft Azure CloudCompute infrastructure (firewalled, no public services).
- Threat Indicators: No malicious activity detected (zero threat feeds, no spam, no known attackers).
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**2. Observation History**
- Recent Activity:
- Scanned 6 times in the last 3 days (ports scanned, TLS/HTTP checks).
- DNSSEC validation confirmed, but listed in 1 of 8 DNSBL (potential false positive or legacy entry).
- Control plane analysis shows minimal operator risk (score 0.13).
- Trend: Stable, no spikes in risk or threats.
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**3. Relationships**
- Linked Entities:
- Subnet: `4.193.121.6/24` (no active malicious siblings).
- Same network as Microsoft Azure (MSFT).
- No connections to Tor, CDN, or residential networks.
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**4. Neighborhood Analysis**
- Subnet Abuse Density: 0% (clean subnet).
- Neighbors: No active IPs in the `/24` range.
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**5. Recommendations**
- Monitor DNSBL Listing: Investigate why this IP is listed in 1 DNSBL (e.g., legacy or false positive).
- Maintain Current Policies: No immediate action required due to low risk.
- Watch for Subnet Changes: Ensure no unexpected activity in the Microsoft Azure subnet.
Conclusion: This IP is part of Microsoft’s infrastructure with no active threats. The DNSBL listing warrants further investigation but does not indicate immediate risk.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Microsoft Corporation |
| ASN | AS8075 |
| Network Name | — |
| CIDR Block | — |
| RIR | ARIN |
| Country | — |
| 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 | 43% | 2 | 5 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:18 UTC |
| Last Seen | 2026-06-27 05:10:39 UTC |
| Profile Built | 2026-06-27 23:16:55 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 25 |
Full dossier details are available via our API.