203.25.124.36
IP Intelligence Briefing: 203.25.124.36
Date: 2026-06-10
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**1. Core Profile**
- Risk Score: Moderate (50/100)
- Ownership:
- ASN: 137409
- Organization: GSL Networks Pty LTD (Japan)
- Subnet: 203.25.124.0/24
- Geolocation: Osaka, Japan (34.69°N, 135.5°E)
- Threat Indicators:
- No active malware, phishing, or exploitation signals.
- Not listed in DNSBLs or blacklists.
- Network Role: Firewalled / No Services (no open ports or TLS services detected).
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**2. Observation History**
- Recent Signals (30 Days):
- DNSSEC Validity: Confirmed (no tampering detected).
- Proxy/VPN Classification: Marked as a "VPN" by ProxyCheck.io (high confidence).
- BGP Stability: Route unstable (0 route changes in 30 days).
- Neighbor Risk: 34% of subnet neighbors flagged as medium-risk; 66% low-risk.
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**3. Relationships & Network Context**
- Linked Entities:
- Subnet: 203.25.124.0/24 (OSAKA-JP-203-25-124-0)
- Shared ownership with GSL Networks Pty LTD (VPN provider).
- Neighbor Analysis:
- Total Neighbors: 100 (25.6% of subnet).
- Abuse Density: 0% (low risk).
- Notable Neighbors:
- 203.25.124.2 (25 risk score), 203.25.124.3 (50 risk score).
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**4. Threat & Mitigation Context**
- VPN Context:
- Likely used for legitimate anonymization but could mask malicious activity.
- Monitor for unexpected traffic patterns or connections to known malicious domains.
- Recommendations:
- Block/Restrict: If this IP is not required, block it to mitigate potential misuse.
- Monitor Subnet: Track neighbors for emerging threats.
- Verify Ownership: Confirm GSL Networks' legitimacy and compliance practices.
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Conclusion:
203.25.124.36 is a moderate-risk IP associated with a Japanese VPN provider. While no direct malicious activity is detected, its use as a VPN and mixed-risk subnet neighbors warrant closer monitoring. SOC teams should evaluate if this IP is necessary for operations and consider blocking it unless further analysis confirms its benign intent.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | VPN Consumer Osaka, Japan |
| ASN | AS137409 |
| Network Name | OSAKA-JP-203-25-124-0 |
| CIDR Block | 203.25.124.0/25 |
| RIR | APNIC |
| Country | JP |
| 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 | 20% (Poor) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown — Insufficient routing data to classify |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| 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 | 13% | 1 | 1 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 30% | 2 | 3 |
| reputation | 0% | 0 | 0 |
| geolocation | 13% | 1 | 1 |
| Overall | 14% | 6 | 7 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Fresh
| First Seen | 2026-05-24 12:34:44 UTC |
| Last Seen | 2026-06-21 18:29:33 UTC |
| Profile Built | 2026-06-14 03:35:12 UTC |
| Data Freshness | Fresh |
| Signal Types | 20 |
| Total Observations | 20 |
Full dossier details are available via our API.