39.144.129.120
IP Intelligence Briefing: 39.144.129.120
Date: 2026-06-07
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**1. Risk Profile**
- Overall Risk Score: 25 (Low Risk)
- Provider: China Mobile (ASN 56041)
- Geolocation: Beijing, China (CN)
- Network Role: Firewalled / No Services (likely internal/mobile infrastructure)
- Threat Indicators: No malicious activity detected (no indicators, spam, or known attacker associations).
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**2. Observation History**
- Recent Activity:
- Observed 18 times since 2026-06-07.
- Risk scores fluctuated between 0–25, with no persistent malicious patterns.
- Classified as mobile network (possibly mobile carrier infrastructure).
- Key Trends:
- Low-risk stability with minimal threat persistence.
- No signs of scanning, enumeration, or exploitation attempts.
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**3. Network Relationships**
- Subnet: 39.144.129.0/24 (China Mobile CMNET)
- Neighbors:
- 42 total IPs in subnet.
- 12 high/medium-risk neighbors (2 medium-risk, 10 high-risk).
- 28 low-risk IPs (mostly residential/mobile).
- Abuse Density: 0.2857 (moderate risk in subnet).
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**4. Actionable Insights**
- Monitor Subnet: The IP resides in a subnet with mixed risk (2 medium/high-risk neighbors). Monitor for lateral movement or shared vulnerabilities.
- Verify Network Role: Confirm if this IP is part of a mobile carrier’s infrastructure (e.g., mobile backhaul) or a private network.
- Check for Anomalies: Ensure no unexpected traffic patterns (e.g., outbound data, DNS queries) from this IP.
- No Immediate Mitigation Needed: Low-risk profile, but subnet-level monitoring is recommended.
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Conclusion:
The IP is associated with China Mobile’s CMNET network and shows no direct malicious activity. However, its subnet contains higher-risk IPs, warranting closer scrutiny. SOC teams should focus on subnet-level monitoring and validate the IP’s role in the network.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | IRT-CHINAMOBILE-CN |
| ASN | AS56041 |
| Network Name | CMNET |
| CIDR Block | 39.128.0.0/10 |
| RIR | APNIC |
| Country | CN |
| 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 | Mobile |
| 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 | 35% | 2 | 3 |
| routing | 19% | 1 | 2 |
| services | 13% | 1 | 1 |
| ownership | 27% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 27% | 2 | 2 |
| Overall | 25% | 9 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-14 13:24:43 UTC |
| Last Seen | 2026-06-07 06:19:36 UTC |
| Profile Built | 2026-06-07 06:56:04 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 17 |
Full dossier details are available via our API.