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What It Is

678CDN is a high-defense CDN service focused on website acceleration and security protection. Its messaging emphasizes “acceleration and protection in one,” offering two types of plans: overseas high-defense acceleration CDN with no ICP filing required, and domestic high-defense CDN that does require ICP filing. Target use cases include corporate websites, e-commerce platforms, gaming applications, video/live streaming, online education, and news/information portals.

Core Capabilities

In terms of infrastructure, the provider claims to offer 200+ intelligent nodes worldwide, covering Asia-Pacific, Europe, the Americas, and six continents in total. It also says it uses intelligent scheduling and real-time global routing optimization to select the best node, with advertised nearby access latency as low as 10ms and 99.99% availability. Security is the main focus: all plans include CC attack protection and DDoS scrubbing, with mitigation capacity ranging from 100G to 500G. The site also mentions Tbps-level bandwidth reserves and distributed scrubbing centers capable of handling attacks such as SYN Flood, UDP Flood, and ICMP Flood, while hiding the origin server’s real IP address. Feature-wise, it supports adding domains, configuring origins, HTTP/HTTPS origin pull, cache policies, CNAME access, and custom CC protection levels for high-defense users. However, there is no clear mention of more advanced capabilities such as edge computing, WAF rules, log analytics, APIs, or HTTP/3.

Pricing and Billing

Its pricing is relatively transparent. Overseas no-ICP high-defense acceleration plans range from ¥68/month to ¥699/month, differentiated by number of domains, DDoS mitigation capacity, bandwidth peak, and traffic allowance. Domestic high-defense CDN plans range from ¥100/month to ¥898/month. Most plans state “unlimited monthly traffic,” but also impose bandwidth peak limits from 10Mbps to 50Mbps, so real-world capacity will still depend on concurrency and peak traffic levels.

Pros and Cons

The advantages are low entry-level pricing, straightforward plan specifications, coverage for both overseas no-ICP and domestic ICP-filed scenarios, and simple integration via CNAME without code changes. The downsides are that node countries, route quality, SLA compensation, refund policy, payment methods, and enterprise support structure are not disclosed. The company behind the brand and its compliance qualifications also need further verification.

Who It’s For and Access from China

678CDN is better suited to small and medium-sized websites, cross-border businesses, and sites vulnerable to CC/DDoS attacks that need a budget-friendly high-defense CDN with fast onboarding. If your primary audience is in mainland China, the domestic high-defense CDN requires an ICP filing. If ICP filing is not possible, the overseas no-ICP option may be considered, but mainland access quality should be tested in practice. Alternatives include Alibaba Cloud CDN, Tencent Cloud CDN, Cloudflare, Akamai, Fastly, UPYUN, and Qiniu Cloud.