137.220.224.7
IP Intelligence Briefing: 137.220.224.7
Date: 2026-06-05
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**1. Core Profile**
- Risk Score: Moderate (40/100)
- Ownership:
- ASN: 152194
- Organization: IRT-CTG-HK (CTG220-192-JP)
- Region: Tokyo, Japan
- Geolocation:
- Country: Japan (JP)
- City: Tokyo
- Coordinates: 35.6893°N, 139.6899°E
- Threat Indicators:
- No malicious activity detected (no known attackers, spam, or blacklisted IPs).
- DNSSEC: Valid
- CAA Records: Present
- DNSBL Listings: 1 out of 8 monitored lists
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**2. Network & Infrastructure**
- Subnet: 137.220.224.0/24
- Abuse Density: 87.5% (high abuse classification)
- Neighbor Risk:
- Total Siblings: 8 IPs
- Threat Siblings: 7 IPs (medium/high risk)
- Active Siblings: 0
- Network Role:
- Firewalled / No Services
- BGP Prefix: 137.220.224.0/24
- Provider: ARIN-registed (IRT-CTG-HK)
- Stability: Unstable (route changes detected)
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**3. Historical Observations (Last 30 Days)**
- Geolocation Consensus: Confirmed (2 sources)
- Abuse Density: Increased from 0.875 (stable) to 0.875 (high abuse)
- Threat Persistence: No persistent malicious activity
- DNS/Network Changes: No significant shifts in DNS or BGP records
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**4. Relationships & Context**
- Linked Entities:
- Network: CTG220-192-JP (same subnet)
- Organization: IRT-CTG-HK (AS152194)
- Subnet Classification: High abuse (inherited risk: 17)
- No Correlated Campaigns or Certificates
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**5. Recommendations**
- Monitor Subnet: High abuse density in 137.220.224.0/24 suggests potential lateral movement or shared infrastructure risks.
- Verify Firewalled Status: Ensure no unintended services are exposed.
- Investigate Neighbors: Focus on high-risk IPs (e.g., 137.220.224.4, 137.220.224.16) for potentialε ³θ activity.
- DNSSEC Enforcement: Confirm DNSSEC is enforced across the subnet to mitigate spoofing risks.
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Note: No immediate action required for 137.220.224.7 itself, but subnet-level monitoring is advised due to neighbor risks.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | IRT-CTG-HK |
| ASN | AS152194 |
| Network Name | CTG220-192-JP |
| CIDR Block | 137.220.192.0/18 |
| RIR | ARIN |
| Country | JP |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR Record | No PTR |
| Forward Confirmed | No β PTR hostname does not resolve back to this IP (weak signal) |
π DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
βοΈ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Unknown β Insufficient routing data to classify |
π Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 27% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 22% | 1 | 3 |
| geolocation | 23% | 2 | 2 |
| Overall | 21% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-05-12 21:53:53 UTC |
| Last Seen | 2026-06-06 14:44:15 UTC |
| Profile Built | 2026-06-06 14:51:57 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 21 |
Full dossier details are available via our API.