52.159.244.87
52.159.244.87 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to San Francisco, United States. It belongs to datacenter or hosting infrastructure. As of October 8, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
## IP Intelligence Briefing: 52.159.244.87/32
Date: 2026-08-11
Subject: Microsoft Azure Infrastructure IP Analysis
Classification: LOW RISK / CLEAN
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Executive Summary
IP address 52.159.244.87 is identified as Microsoft Corporation infrastructure within the MSFT network block (52.145.0.0/16). The address shows no malicious indicators, maintains a risk score of 0, and operates within a clean cloud computing environment on Microsoft Azure. No security action is recommended for this IP.
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Infrastructure Profile
| Attribute | Value |
|---|---|
| **IP Address** | 52.159.244.87 |
| **Risk Score** | 0 |
| **Provider Score** | 0 |
| **Authority Score** | 0 |
| **ASN** | 8075 (Microsoft Corporation) |
| **Organization** | MSFT |
| **Geolocation** | San Francisco, CA, US |
| **Infrastructure Type** | CloudCompute (Microsoft Azure) |
| **Network Classification** | Legitimate Cloud Provider |
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Threat Assessment
Threat Indicators: None detected
- Blacklist count: 0
- Abuse confidence score: Not applicable (clean profile)
- Known campaigns: None
- Threat feeds: No associations
Network Role:
- Provider: Microsoft Azure
- Is Cloud: Yes
- Is CDN: No
- Is Hosting: Yes
- Is Proxy/VPN/Tor: No
- Service Purpose: Firewalled / No Services
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Neighborhood Analysis (52.159.244.0/24)
Subnet Statistics:
- Abuse Density: 0 (clean)
- Total Siblings: 10
- Active Siblings: 8
- Threat Siblings: 1 (low-risk infrastructure)
Neighbor Risk Distribution:
- High Risk: 0
- Medium Risk: 0
- Low Risk: 9
All neighboring IPs in the /24 subnet maintain low-risk profiles with authority scores of 50, indicating legitimate Microsoft infrastructure deployment.
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Historical Observations
Observation Count: 21 total signals recorded
- Recent activity (2026-08-11): Minimal signal presence
- Signal confidence: 0.20–0.50 across dimensions
- Threat persistence: 0 days
- Is persistently malicious: No
Temporal Stability:
- Ownership changes: 0
- Average ownership duration: Stable
- Geo validation: Plausible (ICMP blocked during validation)
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Operational Capabilities
DNS Resolution:
- PTR hostnames: None
- Forward resolution: Not confirmed
- Hosted domains: 0
Services:
- Open ports: None detected
- TLS certificates: None
- HTTP services: None exposed
Control Plane:
- Origin ASN: 8075
- BGP Prefix: 52.152.0.0/13
- DNSSEC: Valid
- Route stability: False (expected for cloud infrastructure)
---
Recommended Actions
Security Posture: No action required
- Risk score: 0
- No firewall rules recommended
- No WAF/IPS rules needed
SOC Analyst Notes:
This IP represents legitimate Microsoft Azure cloud infrastructure with no threat indicators. Traffic from this address should be permitted unless other contextual signals suggest otherwise. The IP operates in a low-abuse-density subnet with no malicious neighbors.
Classification: BENIGN / TRUSTED INFRASTRUCTURE
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 | 52.145.0.0/16 |
| 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 | 0% (None) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| 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 | — |
🛡️ Public Network Snapshot
| Origin ASN | AS8075 |
| Network Prefix | 52.152.0.0/13 |
| Route mapping | Found |
| Certificates in transparency logs | 0 certificates |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 17% | 2 | 3 |
| reputation | 13% | 1 | 2 |
| geolocation | 35% | 2 | 3 |
| Overall | 19% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-03 04:41:38 UTC |
| Last Seen | 2026-10-08 01:02:02 UTC |
| Profile Built | 2026-10-08 01:02:54 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 23 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 52.159.244.87
Who owns the IP address 52.159.244.87?
52.159.244.87 is registered to Microsoft Corporation. The address falls within the 52.145.0.0/16 network block. Registration is held at ARIN.
Where is 52.159.244.87 located?
Geolocation data places 52.159.244.87 in San Francisco, CA, United States. The local time zone is America/Los_Angeles. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 52.159.244.87 malicious or safe?
52.159.244.87 currently carries a low risk assessment, meaning no significant threat indicators have been observed. This assessment is generated from continuously collected signals and can change over time.
Is 52.159.244.87 a VPN, proxy, or data center address?
52.159.244.87 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.