52.123.189.227
Analysis identified 52.123.189.227/32 as Microsoft Corporation infrastructure within the 52.120.0.0/14 block. The asset functioned as a Microsoft Azure cloud compute web server, exhibiting open TCP ports 80 and 443 with a Kestrel server banner. TLS certificate validation confirmed the subject `*.flightproxy.teams.microsoft.com`.
Threat intelligence data returned a Low Risk classification with a score of 25. No specific attack indicators or known campaign correlations were detected. A single DNSBL listing was recorded against eight total lists. Geolocation data indicated the United States, though this contradicted RTT physics measurements. Neighborhood analysis showed zero threat siblings within the 52.123.189.227/24 subnet.
The recommendation was to monitor the asset due to signal contradictions, maintaining a low severity classification.
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 | 4/4 domains |
| DMARC | 4/4 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 4 domains |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 80 | http | tcp | — |
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 3389, 8080, 8443 (2 open / 7 scanned) | ||
| Server | Kestrel |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | *.flightproxy.teams.microsoft.com*.flightproxy.teams.cloud.microsoft |
| Valid From | 2026-08-27T04:26:59+00:00 |
| Valid Until | 2027-02-23T04:26:59+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 |
| Signature Algorithm | sha384RSA |
| Validity Period | 180 days |
| Serial Number | 4100C9AEA856C6C945D45E9C92000000C9AEA8 |
| Thumbprint | 551A5A685CA47B42174A9152FF2644719EBEEE8B |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 27% | 2 | 4 |
| ownership | 27% | 2 | 3 |
| reputation | 22% | 1 | 4 |
| geolocation | 33% | 2 | 5 |
| Overall | 25% | 10 | 21 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-09-07 23:07:44 UTC |
| Last Seen | 2026-09-24 15:34:53 UTC |
| Profile Built | 2026-09-24 16:00:38 UTC |
| Data Freshness | Live |
| Signal Types | 29 |
| Total Observations | 53 |
Full dossier details are available via our API.