58.23.77.136
IP Intelligence Briefing: 58.23.77.136
Date: 2026-06-08
---
**1. Core Profile**
- Risk Score: 55 (Moderate Risk)
- Ownership:
- ASN: 4837
- Organization: QUAN ZHOU (CNCGROUP-FJ-QUANZHOU-MAN)
- RIR: APNIC
- Geolocation: Fujian, China (24.48°N, 118.07°E)
- Network Role: Mobile carrier (China Unicom) – LTE/5G infrastructure.
- Threat Indicators: No direct malicious activity detected.
---
**2. Observation History**
- Recent Activity (2026-06-08):
- DNSSEC validation confirmed.
- Geolocation signals consistent with Fujian, China.
- Subnet prefix: `58.22.0.0/15` (China Unicom backbone).
- DNSBL Listings: 3/8 lists (low severity).
- No spam, known attackers, or Tor exit node activity.
---
**3. Relationships**
- Linked Entities:
- Same network: `CNCGROUP-FJ-QUANZHOU-MAN` (China Unicom).
- No direct associations with known malicious campaigns or domains.
---
**4. Neighborhood Analysis**
- Subnet: `58.23.77.136/24`
- Neighbor Risk Scores:
- 4 IPs with scores of 40–55 (moderate risk).
- Subnet abuse density: 0% (no high-risk neighbors).
- Notable Neighbors:
- `58.23.77.68`, `58.23.77.126`, `58.23.77.156`, `58.23.77.193` (all flagged as moderate risk).
---
**5. Actionable Insights**
- Monitor:
- Track DNSBL listings and geolocation consistency.
- Watch for unexpected changes in subnet behavior (e.g., new high-risk neighbors).
- Context:
- Mobile carrier infrastructure (China Unicom) in Fujian, China. No direct threat indicators, but moderate risk warrants cautious monitoring.
---
End of Briefing
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | QUAN ZHOU |
| ASN | AS4837 |
| Network Name | CNCGROUP-FJ-QUANZHOU-MAN |
| CIDR Block | 58.23.64.0/19 |
| RIR | APNIC |
| Country | CN |
| Abuse Contact | — |
🌐 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 | |||
| 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 | 24% | 2 | 2 |
| reputation | 0% | 0 | 0 |
| geolocation | 13% | 1 | 1 |
| Overall | 13% | 6 | 6 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-19 09:37:59 UTC |
| Last Seen | 2026-06-08 19:37:16 UTC |
| Profile Built | 2026-06-05 05:50:16 UTC |
| Data Freshness | Live |
| Signal Types | 8 |
| Total Observations | 8 |
Full dossier details are available via our API.