When choosing an overseas VPS, CN2 GT and CN2 GIA are two network types that are frequently mentioned. However, many users are not entirely clear about their differences, advantages, disadvantages, or how to identify which routing type a VPS uses.
In this article, we will explain the differences between the 163 backbone network, CN2 GT, and CN2 GIA, along with examples and explanations to help you better understand these network routes.
Basic Concepts: 163 Backbone, CN2 GT, and CN2 GIA
1. 163 Backbone Network (ChinaNet)
The 163 backbone network is the earliest international gateway network built by China Telecom. Most overseas traffic from China is transmitted through this network, and its routes usually begin with 202.97.
Because it carries around 90% of international traffic, the network often becomes congested during peak hours, which can lead to packet loss and slower connection speeds.
2. CN2 Network (ChinaNet Next Carrying Network)
To solve the congestion issues of the 163 backbone network, China Telecom introduced the CN2 network, which typically uses routing addresses beginning with 59.43.
Compared with the 163 backbone, CN2 provides better stability and faster speeds. CN2 is further divided into two types:
- CN2 GT
- CN2 GIA
Key Differences Between CN2 GT and CN2 GIA
| Network Type | Domestic Route | International Route | Route Identifier | Speed | Price | Suitable Use Case |
|---|---|---|---|---|---|---|
| 163 Backbone | 163 Backbone | 163 Backbone | 202.97.x.x | Slow | Low | General users |
| CN2 GT | 163 Backbone | CN2 (59.43.x.x) | 202.97.x.x → 59.43.x.x | Medium | Medium | Budget-friendly users |
| CN2 GIA | CN2 (59.43.x.x) | CN2 (59.43.x.x) | 59.43.x.x → 59.43.x.x | Fast | High | High-performance users |
Explanation with Network Route Examples
163 Backbone
Both domestic and international traffic pass through the 163 backbone (202.97).
This route is highly susceptible to network congestion during peak hours.
CN2 GT
The domestic portion still uses the 163 backbone (202.97), while the international segment uses CN2 (59.43).
This improves international connectivity but domestic congestion may still occur.
CN2 GIA
The entire route uses CN2 (59.43) for both domestic and international segments.
This avoids the congestion of the 163 backbone, providing the best speed and stability, making it suitable for businesses with high network requirements.
How to Identify Which Network Route Your VPS Uses
1. Use Traceroute Tools
Run:
- tracert (Windows)
- traceroute (Linux/Mac)
to trace the network path.
2. Check the IP Route Addresses
- If domestic routes contain 202.97, it indicates the 163 backbone.
- If 59.43 appears throughout the entire route, it indicates CN2 GIA.
- If 59.43 only appears in the international segment, it indicates CN2 GT.
3. Observe Network Performance
- CN2 GIA usually remains smooth even during peak hours.
- 163 backbone and CN2 GT may experience packet loss or reduced speeds during congestion.
Frequently Asked Questions (FAQ)
1. How much more expensive is CN2 GIA compared to CN2 GT?
Generally, CN2 GIA costs about 1.5–2 times more than CN2 GT, although the exact price depends on the VPS provider.
2. How can I confirm whether a VPS uses CN2 GIA?
You can check the test IP provided by the hosting provider and run tracert or mtr to trace the route. If the entire route uses IP addresses starting with 59.43, it is CN2 GIA.
3. Which VPS providers offer CN2 GIA routes?
Several providers offer CN2 GIA VPS, including:
- PQ.Hosting
- CloudCone
- HuaNa Cloud
You can choose the provider that best fits your needs.
4. What types of services benefit from CN2 GIA?
CN2 GIA is ideal for businesses that require high network stability and speed, such as:
- Cross-border e-commerce
- Live video streaming
- Game servers
- High-performance websites
Conclusion
CN2 GT and CN2 GIA play important roles in accessing overseas servers from China.
CN2 GIA, which uses the CN2 dedicated route for the entire path, provides significantly better speed and stability compared to both CN2 GT and the traditional 163 backbone network, though it also comes with a higher price.
If you require high network performance and reliability, CN2 GIA is the better choice.
For users seeking better cost performance, CN2 GT can still be a suitable option.