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China's Firewall Blocks Every Reachable Page on VPN.com

Every address under the domain vpn.com that researchers have been able to test and reach a verdict on is currently blocked inside mainland China. That's four out of four. The site's homepage, https://vpn.com, fails through multiple, overlapping mechanisms rather than a single filter, which suggests a deliberate and layered effort to keep Chinese users away from it entirely.

The blocking methods are worth unpacking because they reveal how sophisticated Chinese internet censorship has become. In the case of vpn.com, the Great Firewall poisons the site's DNS records, so a user's device is given a false or useless address instead of the real one. It also silently drops data packets, meaning connection attempts simply time out with no error message explaining why. On top of that, the firewall blocks the connection outright at the network level. This redundancy - poisoning, dropping, and outright blocking - is characteristic of domains that Chinese authorities consider a persistent priority to suppress, rather than an incidental or temporary target. Independent monitoring projects such as GreatFire have tracked this pattern closely, and similar findings are documented here, offering a useful reference point for anyone trying to understand how consistently these blocks are enforced. documented here

For ordinary users, the practical consequence is straightforward: anyone inside mainland China attempting to visit vpn.com through a normal connection will not succeed, regardless of which specific page they try to load. The domain functions as if it does not exist on the Chinese internet.

Why a VPN Comparison Site Becomes a Target

It might seem counterintuitive that a website dedicated to explaining and comparing VPN services would itself be censored. But the logic is consistent with how Chinese censorship generally operates. Authorities are not only concerned with specific content; they are concerned with tools and information that help citizens bypass the censorship system altogether. A site that helps people choose, understand, or access a VPN is functionally an on-ramp to circumvention, even if the site itself contains no politically sensitive material. Blocking the on-ramp is often simpler and more effective than trying to block every individual VPN service downstream.

This approach has a long history. China's internet filtering regime, commonly known as the Great Firewall, has for years targeted not just news outlets and social platforms but also the infrastructure of circumvention itself - VPN provider websites, proxy directories, and technical forums that explain tunneling protocols or encryption standards used to evade detection.

How People Still Get Through

The irony is that the same tool being blocked is also the solution to the block. A VPN or another circumvention technology routes a user's traffic through a server outside mainland China, encrypting it along the way so that the Great Firewall cannot easily inspect or identify its destination. Once traffic exits Chinese networks, it is no longer subject to the domestic filtering rules that stop a direct request to vpn.com from succeeding. This is why VPN adoption remains significant in China despite the government's sustained campaign against them.

Services such as GreatFire VPN exist partly to address a more basic problem: knowing which tools still work. GreatFire's testing platform, the Analyzer, checks not only vpn.com but the domains of numerous VPN and proxy providers, giving users a way to verify reachability before depending on a particular service during a trip or while living in a restrictive environment. That verification step matters because circumvention tools themselves are routinely targeted, and a provider that worked last month may not work today.

The Broader Stakes for Digital Rights

Blocking access to information about privacy tools carries implications beyond convenience. It affects journalists, researchers, dissidents, and ordinary citizens who rely on secure channels to communicate, access uncensored news, or simply protect their data from surveillance. As censorship techniques grow more precise - combining DNS poisoning, packet inspection, and outright blocking - the tools needed to counter them must also evolve, creating an ongoing technical contest between state filtering systems and the circumvention methods built to outpace them.