91.99.5.55
IP Intelligence Dossier
Your IP: 216.73.216.123
🤖 Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
IP Intelligence Briefing: 91.99.5.55
Date: 2026-06-14
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**1. Core Profile**
- Risk Score: Moderate (40/100)
- Provider: Hetzner Online GmbH (ASN: 24940)
- Geolocation: Falkenstein, Saxony, Germany (51.17°N, 10.45°E)
- Network Role: Cloud compute instance (Hosting, Web Server)
- Services: HTTP/HTTPS (ports 80/443), self-signed TLS certificate, Microsoft-IIS/10.0 server banner.
- Ownership: Allocated to Hetzner Online GmbH (RIPE NCC), last registered 8,768 days ago.
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**2. Threat & Security Indicators**
- Threat Risk: No active indicators (no malware, spam, or known attacker associations).
- DNS Security: SPF/DKIM/DNSSEC enabled; CAA records present.
- BGP Stability: Stable route (AS_PATH: 37100 24940), no recent route changes.
- Geo Validation: ICMP blocked, limiting geolocation accuracy.
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**3. Observation History (30-Day Trend)**
- Risk Trends: Stable moderate risk score (no significant spikes).
- Network Changes: No abrupt shifts in BGP routes or ownership.
- DNS Activity: Consistent DNS resolution to `static.55.5.99.91.clients.your-server.de`.
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**4. Network Relationships**
- Subnet: 91.99.5.55/24 (classified as "mostly_clean").
- Linked Entities:
- Same network: `CLOUD-FSN1` (Hetzner infrastructure).
- DNS hostnames: `static.55.5.99.91.clients.your-server.de`.
- No Known Malicious Associations: No shared threat indicators with neighboring IPs.
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**5. Neighborhood Analysis**
- Subnet Abuse Density: 0% (no malicious IPs in 91.99.5.55/24).
- Neighbor Count: 0 (no active sibling IPs in the subnet).
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**6. Recommendations**
- Monitor TLS Configuration: Self-signed certificate may indicate weak security practices.
- Verify Geolocation Accuracy: ICMP restrictions may skew location data; consider alternative validation methods.
- Inspect Server Configuration: Review IIS/10.0 banner and HTTP responses for potential vulnerabilities.
- Watch for Subnet Changes: Isolated subnet (no neighbors) could indicate a new or experimental setup.
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Source: IPDebrief Threat Intelligence Platform
Note: This briefing reflects current data as of 2026-06-14. Continuous monitoring is advised for evolving risks.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Hetzner Online GmbH - Contact Role |
| ASN | AS24940 |
| Network Name | — |
| CIDR Block | 91.99.0.0/16 |
| RIR | RIPE |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | static.55.5.99.91.clients.your-server.de |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | static.55.5.99.91.clients.your-server.de |
🔐 DNS Hygiene
| Hygiene Score | 100% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ 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 | Microsoft-IIS/10.0 |
| HTTP Title | — |
🔐 TLS Certificate
A self-signed certificate was detected. This is common for development servers, internal services, or IoT devices.
CN=ubuntu-SRV-web
Issued by CN=ubuntu-SRV-web
Self-signed: Yes
| SANs | None |
| Valid From | 2026-04-04T09:18:09+00:00 |
| Valid Until | 2026-10-04T09:18:09+00:00 |
| TLS Protocol | Tls12 |
| Cipher Suite | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 |
| Signature Algorithm | sha256RSA |
| Validity Period | 183 days |
| Serial Number | 5CFC1FFAA8CABD9F442C7FC218F5C934 |
| Thumbprint | 3392B806061DA8742AEC713E830B23E80655C66F |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 22% | 2 | 4 |
| routing | 27% | 2 | 3 |
| services | 25% | 2 | 3 |
| ownership | 27% | 3 | 4 |
| reputation | 26% | 1 | 3 |
| geolocation | 31% | 2 | 3 |
| Overall | 26% | 12 | 20 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-10 10:14:11 UTC |
| Last Seen | 2026-06-27 17:41:10 UTC |
| Profile Built | 2026-06-28 11:46:11 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 30 |
🔍 25 signal types · 30 observations collected
This report is generated from 25+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
ℹ️ About This Report
All data shown is publicly available network metadata — IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.