4.194.18.173
🏢 Ownership & Registration
| Organization | Microsoft Corporation |
| ASN | AS8075 |
| Network Name | MSFT |
| CIDR Block | 4.192.0.0/12 |
| 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 | 60% (Good) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ 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 | activation.sls.microsoft.comvalidation.sls.microsoft.comactivation-v2.sls.microsoft.comvalidation-v2.sls.microsoft.comactivation-v3.sls.microsoft.comvalidation-v3.sls.microsoft.comsls.microsoft.com |
| Valid From | 2026-01-22T20:33:12+00:00 |
| Valid Until | 2026-10-07T20:33:12+00:00 |
| TLS Protocol | Tls13 |
| Cipher Suite | TLS_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 258 days |
🛡️ Public Network Snapshot
| Origin ASN | AS8075 |
| Network Prefix | 4.192.0.0/12 |
| Route mapping | Found |
| Certificates in transparency logs | 0 certificates |
| HSTS | Enabled |
| CSP | Not detected |
| HTTP/2 | Enabled |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 22% | 1 | 3 |
| geolocation | 27% | 2 | 3 |
| Overall | 20% | 10 | 16 |
| Data Coherence | Mixed Signals (68%) — 2 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ TLS certificate claims US but primary geo says SG
📅 Observation Timeline 🔄 Live
| First Seen | 2026-07-02 04:21:52 UTC |
| Last Seen | 2026-08-22 16:45:35 UTC |
| Profile Built | 2026-08-29 10:22:51 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 24 |
Full dossier details are available via our API.
❓ Frequently Asked Questions About 4.194.18.173
Who owns the IP address 4.194.18.173?
4.194.18.173 is registered to Microsoft Corporation. The address falls within the 4.192.0.0/12 network block. Registration is held at ARIN.
Where is 4.194.18.173 located?
Geolocation data places 4.194.18.173 in Singapore, SG, Singapore. The local time zone is Asia/Singapore. IP geolocation is approximate and indicates the network's registered or routed location rather than a precise physical address.
Is 4.194.18.173 malicious or safe?
4.194.18.173 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 4.194.18.173?
Responsive ports observed on 4.194.18.173 include 443. Port visibility reflects the most recent scan and may change as the host's configuration or firewall rules change.
Is 4.194.18.173 a VPN, proxy, or data center address?
4.194.18.173 is classified as cloud infrastructure and hosting infrastructure based on network ownership and behavioural analysis.