52.102.103.21
52.102.103.21 is an IPv4 address operated by Microsoft Corporation (AS8075), geolocated to Redmond, United States. It belongs to datacenter or hosting infrastructure. As of November 3, 2026, IPDebrief rates it Low Risk (25/100); no anonymizing service was detected.
Intelligence profile analysis for IP 52.102.103.21 identified the address as Microsoft Corporation (AS8075) cloud infrastructure hosted within Azure. The host presented a single HTTPS service on port 443 with a TLS certificate associated with Outlook.com and Office365 domains.
The address received a risk score of 25, classified as Low Risk. However, signal contradictions were recorded. Geolocation data placed the server in Redmond, Washington, while Round-Trip Time measurements of 42ms contradicted the physical distance of approximately 6,700km. One DNSBL listing was also observed. The immediate subnet (52.102.103.21/24) showed a clean classification with low abuse density, though one threat sibling was identified.
Operational recommendations advised monitoring the address due to conflicting signal data and the presence of threat indicators, despite no confirmed active attack campaigns.
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 | 52.96.0.0/12 |
| 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 | 5/7 domains |
| DMARC | 6/7 domains |
| FCrDNS | Not verified |
| DNSSEC | Not signed |
| CAA | Not configured |
| Domains Checked | 7 domains |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Web Server |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| 443 | https | tcp | — |
| Closed Ports | 22, 25, 80, 3389, 8080, 8443 (1 open / 7 scanned) | ||
| Server | Web server detected |
| 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 |
🛡️ Public Network Snapshot
| Origin ASN | AS8075 |
| Network Prefix | 52.96.0.0/12 |
| Route mapping | Found |
| Certificates in transparency logs | 0 certificates |
| HSTS | Not detected |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 25% | 1 | 1 |
| routing | 25% | 1 | 1 |
| services | 35% | 2 | 2 |
| ownership | 25% | 1 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 25% | 1 | 1 |
| Overall | 22% | 6 | 7 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-10-20 14:52:43 UTC |
| Last Seen | 2026-11-03 10:59:51 UTC |
| Profile Built | 2026-11-03 11:02:27 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 30 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 52.102.103.21
Who owns the IP address 52.102.103.21?
52.102.103.21 is registered to Microsoft Corporation. The address falls within the 52.96.0.0/12 network block. Registration is held at ARIN.
Where is 52.102.103.21 located?
Geolocation data places 52.102.103.21 in Redmond, WA, 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 52.102.103.21 malicious or safe?
52.102.103.21 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.
What ports are open on 52.102.103.21?
Responsive ports observed on 52.102.103.21 include 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
Is 52.102.103.21 a VPN, proxy, or data center address?
52.102.103.21 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.