52.123.251.56
Intelligence Briefing: 52.123.251.56/32
Observation Window: 2026-09-03 to 2026-09-11
Ownership and Infrastructure:
The IP address is attributed to Microsoft Corporation (ASN 8075) within the 52.120.0.0/14 block. Network role classification identified the endpoint as a web server. Open ports included TCP 80, 443, and 8443. TLS certificate validation confirmed Microsoft Office 365 domains (outlook.com, *.office.com). The server banner identified as Microsoft-HTTPAPI/2.0 with HTTP/2 support.
Threat and Reputation Indicators:
Despite corporate attribution, the asset received a "Suspicious Host" classification with a risk score of 25. The address appeared on one of eight monitored DNS blacklists. Neighborhood analysis indicated an abuse density of 0.1132, with six threat siblings identified within the /24 subnet. Attribution confidence remained low at 35%.
Anomalies:
Geolocation validation flagged a contradiction between the claimed location (Washington, VA) and RTT physics measurements (6380km distance vs 27ms RTT). Data coherence score was marked as mostly consistent with one contradiction.
Recommendation:
Monitor. The asset warrants observation due to signal contradictions and blacklisting status, despite the presence of legitimate Microsoft service signatures.
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 | 52.120.0.0/14 |
| 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 | 40% (Fair) |
| SPF | 15/21 domains |
| DMARC | 18/21 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 21 domains |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| 8443 | https-alt | tcp | — |
| Closed Ports | 22, 25, 3389, 8080 (3 open / 7 scanned) | ||
| Server | Microsoft-HTTPAPI/2.0 |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | outlook.com*.hotmail.com*.internal.outlook.com*.live.com*.office.com*.office365.com*.outlook.com*.outlook.office365.comattachment.outlook.live.netattachment.outlook.office.net |
| Valid From | 2026-06-26T00:00:00+00:00 |
| Valid Until | 2027-01-10T23:59:59+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 198 days |
| Serial Number | 0E371D2766FD365DADDCF4004297839E |
| Thumbprint | C7C19E04464D744D810EF31A24C54FC22A7909C5 |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 36% | 2 | 7 |
| routing | 13% | 1 | 1 |
| services | 27% | 2 | 4 |
| ownership | 27% | 2 | 3 |
| reputation | 22% | 1 | 4 |
| geolocation | 36% | 2 | 7 |
| Overall | 27% | 10 | 26 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-03 18:29:07 UTC |
| Last Seen | 2026-09-27 18:48:19 UTC |
| Profile Built | 2026-09-27 18:52:32 UTC |
| Data Freshness | Live |
| Signal Types | 27 |
| Total Observations | 67 |
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