31.220.81.99
IP Intelligence Briefing: 31.220.81.99
Date: 2026-06-10
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**1. Core Profile**
- Risk Rating: Moderate (Risk Score: 50)
- Ownership: Registered to Johannes Selg (ASN 51167, Contabo).
- Geolocation: Lauterbourg, Grand Est, Germany (51.17°N, 10.45°E).
- Network Role: Cloud compute instance (Contabo) with no open ports or services detected.
- Threat Indicators: No malicious activity, spam, or known attacker associations.
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**2. Observation History**
- Recent Activity (June 1, 2026):
- DNS resolution to `vmi2675531.contaboserver.net` and `vmi3338527.contaboserver.net`.
- Subnet abuse density analysis (31.220.81.99/24) shows "mostly_clean" classification.
- No persistent malicious behavior or ownership changes.
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**3. Relationships**
- DNS Associations:
- Linked to Contabo-hosted domains (`contaboserver.net`).
- No email authentication (SPF/DKIM) detected.
- Network Connections:
- Same subnet (`31.220.81.99/24`) with 2 siblings, 0 active, and 2 flagged as risky.
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**4. Neighborhood Analysis**
- Subnet Abuse Density: Low (abuseDensity: 1).
- Neighbors:
- 31.220.81.213 (Risk Score: 25, Authority Score: 60).
- Subnet classification: "mostly_clean" with no immediate threats.
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**5. Recommendations**
- Monitor Subnet: Track activity in `31.220.81.99/24` for anomalies, especially given 2 risky neighbors.
- Verify Hosting Provider: Confirm Contabo’s security practices for hosted instances.
- DNS Monitoring: Investigate DNS resolutions to `contaboserver.net` for potential command-and-control (C2) or data exfiltration.
- No Immediate Action Required: The IP shows no direct malicious indicators, but ongoing surveillance is advised.
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End of Briefing
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Johannes Selg |
| ASN | AS51167 |
| Network Name | — |
| CIDR Block | 31.220.80.0/21 |
| RIR | RIPE |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | vmi2675531.contaboserver.net |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | vmi3338527.contaboserver.net |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 37% | 2 | 4 |
| routing | 27% | 2 | 3 |
| services | 11% | 1 | 2 |
| ownership | 37% | 3 | 6 |
| reputation | 32% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 28% | 11 | 20 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-23 18:30:02 UTC |
| Last Seen | 2026-06-28 22:43:52 UTC |
| Profile Built | 2026-06-29 04:46:31 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 28 |
Full dossier details are available via our API.