CstoneCloud is an overseas cloud server and dedicated server provider focused on residential IPs, dual-ISP routing, and optimized connectivity to China. Supported payment methods include WeChat Pay, Alipay, and USDT (via customer support). The provider also offers a 24-hour refund policy (if the IP is not blocked) and allows testing before payment for dedicated servers.
Current April promotions:
- 20% OFF monthly plans: four-mon
- 40% OFF yearly plans: four-year
- Promotion valid until: 2026-05-15
This review covers the CstoneCloud US CUII Residential Dual-ISP Cloud Server plan for reference.
CstoneCloud Official Website:
Portal Home – CstoneCloud
CstoneCloud US CUII Residential Dual-ISP Cloud Server Plans
Direct connectivity with five-network return routing via AS9929 (premium US-China optimized routing comparable to CN2 GIA), residential dual-ISP IPs, clean IP reputation, and high-quality routing. Suitable for cross-border e-commerce and various online projects, including but not limited to TikTok and ChatGPT usage. Technical deployment support and SOCKS5 services are also available.
Test IP: 38.244.39.2 (please refer to pingip.cn for the latest result)
| Plan | CPU | RAM | Storage | Bandwidth | Traffic | IP | Original Price |
|---|---|---|---|---|---|---|---|
| CUII-ISP-A | 1 Core E5v4 | 1GB | 20GB SSD | 100Mbps | 1TB | 1 IP | ¥55/month Order |
| CUII-ISP-B | 2 Cores E5v4 | 2GB | 40GB SSD | 100Mbps | 2TB | 1 IP | ¥109/month Order |
| CUII-ISP-C | 4 Cores E5v4 | 4GB | 80GB SSD | 100Mbps | 4TB | 1 IP | ¥208/month Order |
| CUII-ISP-D | 4 Cores E5v4 | 8GB | 160GB SSD | 150Mbps | 8TB | 1 IP | ¥399/month Order |
| CUII-ISP-E | 8 Cores E5v4 | 16GB | 300GB SSD | 200Mbps | 16TB | 1 IP | ¥781/month Order |
Official test IP results from pingip.cn:
The IP is identified as dual-ISP, residential broadband, native IP, and extremely low-risk.
📌 Test Configuration: CUII-ISP-A
Basic IP Information
- IP: 38.244.**.*
- Location: Los Angeles, USA
- ASN: AS174 (Cogent)
- Type: Native IP
ipinfo.io Dual-ISP Detection Results
🔍 Multi-Database Detection Results
| Database | Detected Type |
|---|---|
| IPinfo | Residential |
| ipregistry | Residential |
| ipapi | Datacenter |
| IP2Location | Datacenter |
| AbuseIPDB | Residential |
🔍 Overall IP Attribute Analysis
- Both residential and datacenter attributes detected
- Not a pure IDC IP
- Not a pure residential broadband IP either
📌 Dual-ISP Conclusion
- ✔ Matches typical dual-ISP characteristics
- ✔ Classified as a hybrid Residential + IDC IP
- ✔ Common in carrier-grade residential proxy networks
👉 Why does this happen?
- The actual upstream network uses Cogent backbone routing (IDC infrastructure)
- The assigned IP range belongs to residential broadband ranges
📌 In short:
👉 This is a typical carrier-grade dual-ISP residential IP rather than a standard datacenter IP.
IP Quality & Risk Control
- Risk score: 4% (extremely low)
- Fraud score: 5/100
- Not identified as VPN or Tor
- Very few blacklist records
📌 Conclusion:
👉 The IP reputation is very clean and suitable for account-related operations.
Streaming & AI Unlock Capability
Test results:
📌 Fully unlocked for US-region services.
Latency Test
China Routes
- Average latency: 208ms
- China Telecom: 200ms
- China Unicom: 251ms
- China Mobile: 181ms
👉 Lowest observed latency: 130ms (Shanghai Unicom)
International Routes
- North America: 20ms
- Asia: 148ms
- Europe: 147ms
📌 Excellent US West Coast performance, average China latency.
Outbound Route Analysis
China Telecom
- 163 Backbone → San Jose → Cogent → Los Angeles
👉 Standard international routing
China Unicom
- 169 Backbone → San Jose → Cogent
👉 Higher latency fluctuations
China Mobile
- CMI international route → Cogent
👉 Relatively stable
📌 Outbound Summary:
- No China-optimized outbound routing
- All three major carriers route through Cogent
Inbound Route Analysis (Core Advantage)
Return Routing
Routing Path
China Telecom / China Unicom
USA → Hong Kong → Shanghai → Mainland China
Using:
- AS10099 (China Unicom International)
- AS9929 Premium Network
China Mobile
USA → Shanghai → Mainland China
Using:
- CMIN2
📌 Return Route Conclusion:
- ✔ Five-network return routing via AS9929
- ✔ China Mobile uses CMIN2
- ✔ Experience close to CN2 GIA quality
Hardware Performance
- CPU: E5-2680 v4
- Single-core score: 782
- Geekbench: 603 / 585
Disk Performance
- Read: 330MB/s
- Write: 315MB/s
📌 Entry-level performance is acceptable.
Network Summary
Advantages:
- Dual-ISP residential IPs (main selling point)
- AS9929 optimized return routing
- Strong streaming unlock capability
- Low risk score
Disadvantages:
- Standard outbound routing
- China Unicom fluctuations
- Port 25 restricted
Recommended Use Cases
Suitable for:
- Cross-border e-commerce
- TikTok operations
- ChatGPT access
- Proxy / SOCKS5 services
Not suitable for:
- Mail servers
- High-demand China direct-connect applications
Frequently Asked Questions (FAQ)
Q1: Is this really a dual-ISP IP?
Yes. Based on multiple database results, it clearly matches the characteristics of a dual-ISP hybrid IP.
Q2: Why do some databases identify it as a datacenter IP?
Because the underlying backbone uses Cogent infrastructure, which is common for dual-ISP deployments.
Q3: What is the difference compared to a pure residential IP?
- Pure residential IPs are cleaner but less stable
- Dual-ISP IPs provide better stability and usability
Q4: Is the AS9929 return route reliable?
Yes. It is considered a premium China-return route with experience close to CN2 GIA.
Q5: Is it suitable for TikTok?
Yes. Native unlock capability has been verified.
Final Thoughts
The core advantage of CstoneCloud’s CUII product is:
👉 Dual-ISP residential IP + AS9929 optimized return route + native streaming unlock support
Compared to regular VPS products, it is more suitable for:
- Cross-border business
- High-quality IP requirements
- Streaming and unlock-related applications
📌 If you need a stable and low-risk IP environment, this product is definitely worth considering.
NodeQuality Test Report:
https://nodequality.com/r/nG3hSoaCkakAnQ54PlhATuAtI0f2ZbBL
