The answer is simple: whether a high-protection CDN requires ICP filing has nothing to do with the “high-protection” feature itself. What really matters is whether your business uses CDN nodes located in mainland China.

Many teams rush to deploy so-called “no-filing high-protection CDNs” just to launch quickly, only to find that users in China cannot access the site properly, or worse, the provider disappears during a large-scale DDoS attack. On the other hand, some companies spend 20 days completing ICP filing, only to realize later that their business barely needs mainland China nodes at all.

So the core issue is not CDN protection capability — it is where your traffic is being served.

What Is a High-Protection CDN?

A high-protection CDN combines traditional CDN acceleration with advanced security features such as:

• DDoS mitigation
• CC attack protection
• Traffic scrubbing
• Origin IP masking

It improves both performance and security for websites and applications.

When Is ICP Filing Required?

1. If You Use Mainland China CDN Nodes

If your CDN includes mainland China nodes operated by carriers such as China Telecom, China Unicom, or China Mobile, ICP filing is mandatory.

Major providers like Alibaba Cloud, Tencent Cloud, and China Telecom Cloud strictly block unfiled domains from accessing domestic CDN services.

If you want to avoid filing, you must use overseas CDN providers such as Cloudflare, CDN5, or Yewsafe.

2. If Your CDN Does Not Cover Mainland China

No ICP filing is required.

This setup is common for:

• Cross-border e-commerce
• Overseas businesses
• Web3 projects
• International gaming platforms

The CDN nodes are typically located in Hong Kong, Singapore, the United States, or Europe, which are outside the scope of China’s ICP regulations.

3. Hybrid Architecture

Many larger companies separate domestic and overseas traffic using different domains.

For example:

• Domestic domain: xxx.com.cn (ICP-filed)
• Global domain: xxx.com (no filing required)

Users are routed through intelligent DNS scheduling to the appropriate CDN network.

Comparison

Frequently Asked Questions

Q1. If My Origin Server Is Overseas, Do I Still Need ICP Filing?

Yes.

ICP filing depends on the CDN node location, not the origin server location.

Even if your server is hosted in Hong Kong or the United States, using mainland China CDN nodes still requires filing.

Q2. Can Chinese Users Access a No-Filing CDN Normally?

Yes, but latency will be higher compared to domestic CDN nodes.

Typical latency ranges from 50ms to 200ms, while domestic nodes are usually around 10ms to 30ms.

Providers with optimized CN2 routes can significantly improve the experience for regular browsing and e-commerce usage.

However, real-time services such as live streaming or online gaming may still be affected.

Q3. Are No-Filing High-Protection CDNs Safe?

Reputable providers are generally secure and stable.

The protection mechanism is similar to domestic high-protection CDNs:

• Edge nodes absorb attack traffic
• Clean traffic is forwarded to the origin server
• Origin IP addresses remain hidden

The main risk comes from unreliable small providers with weak infrastructure.

Q4. Can I Switch to a No-Filing CDN After Completing ICP Filing?

Yes.

You can simply modify your DNS settings and route traffic to overseas CDN nodes.

There is no need to cancel the ICP filing.

However, if you later want to reconnect to mainland China nodes, filing will still be required.

Q5. What Attacks Can a High-Protection CDN Defend Against?

Compared with standard CDNs, high-protection CDNs provide much stronger security capabilities, including protection against:

• DDoS attacks
• CC attacks
• SYN Flood
• UDP Flood
• SQL Injection
• XSS attacks

Protection capacity can range from tens of Gbps to over 1Tbps.

Recommended CDN Strategies for 2026

Domestic China Business

Use ICP-filed domestic CDN services such as Alibaba Cloud or Tencent Cloud for the best performance and compliance.

Cross-Border & International Business

No-filing overseas CDNs such as CDN5, Yewsafe, or Cloudflare are ideal for rapid deployment and global traffic.

Global Business

A hybrid architecture is usually the best approach:

• Domestic filed domain for China traffic
• Overseas domain for international users

This balances speed, compliance, and operational flexibility.

In the end, ICP filing for a high-protection CDN is determined by node location — not by whether the CDN includes anti-DDoS features.

• Mainland China nodes → ICP filing required
• Overseas-only nodes → No filing required

That is the real rule behind “no-filing high-protection CDN” services in 2026.