blocked in China

Today, Nov 9, 2012, and were blocked in China. It's the first time since we started tracking online censorship in China in February last year that this has happened. Here's what we know:

  1. The subdomains,,,,,, and perhaps many more are all currently DNS poisoned in China. Instead of the real IP addresses, any lookups from China to any of these domains result in the following IP: That IP address is located in Korea and doesn't serve any website at all.
  2. This means that none of these websites, including Google Search, currently work in China, unless you have a VPN or other cirumvention tool.
  3. Using a DNS server outside of China doesn't help. A lookup of to is also distorted, by the Great Firewall.
  4. So far you can still access other country versions of Google such as

You can see an overview of different Google sites here: You can choose any of them and test them in real time to stay updated.

Affecting more users than ever

Facebook, Twitter and YouTube were all blocked before they attracted more than a small number of users in China. We've argued before that the authorities didn't dare to fully block GMail since it has too many users already. Fully blocking Google goes much further. Google Search is only the second search engine in China (after Baidu) but with an online population of more than 500 million that still leaves it with many millions of daily users. According to Alexa, it's the Top 5 most used website in China. Never before have so many people been affected by a decision to block a website. If Google stays blocked, many more people in China will become aware of the extent of censorship. How will they react? Will there be protests? Check out reactions by Weibo users on FreeWeibo

Temporary or permanent?

The Communist Party of China is currently holding its 18th Party Congress in which new leaders of the party and the country are formally chosen. The fact that Google is blocked now is surely no coincidence. The big question is whether it will be unblocked again once the congress is over. We will closely monitor developments. 

By the way.. Analytics

The fact that and are blocked doesn't just mean that you can't access the web interface in China. It means that visits by Chinese users won't be tracked by Google anymore. Foreign websites using Google Analytics to track their visitors will currently track 0 users coming from China, whether or not their website itself is blocked.

What to do?

Many VPNs and other circumvention tools have been working poorly or not at all in the last few days. The free iPhone app OpenDoor is still working, though it has also suffered glitches recently. Another method of accessing Google Search is to use one of their other country versions such as or These may also be blocked of course.

You can also access Google directly using one of their IP addresses. These don't appear to be blocked (yet). Here are some:

Follow us on Twitter to stay updated to the latest developments of online censorship in China.


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Tue, Jul 05, 2016 now testing VPN speed and stability in China

There is a commonly held belief in China that if you have a VPN that works then you should keep quiet about it. In terms of freedom of access to information, the problem with this approach is that access to knowledge suddenly is a secret. Today we are launching a project that we hope will destroy that model.

Our newest website, Circumvention Central (CC), aims to provide real-time information and data about circumvention solutions that work in China. Since 2011, we have been collecting data about blocked websites in China and now we will add data about the effectiveness of VPNs and other circumvention tools.

We are launching CC with four main objectives in mind.

Our first objective is to help to grow the number of Chinese who circumvent censorship restrictions in China. By sharing our information and data about these tools, we hope to show a wider audience which circumvention tools are working.

Our second objective is to improve the circumvention experience for users in China by bringing transparency to tool performance. We will measure these tools on speed (how quickly popular websites are loaded) and on stability (the extent to which popular websites load successfully).

Sat, May 07, 2016

The New York Times vs. The Chinese Authorities

Could the New York Times be setting the best path forward for news organizations in China?

Thu, Feb 18, 2016

From the desk of Lu Wei: Apple, encryption and China

Lu Wei, Director of the Cyberspace Administration of China, offers some friendly help to FBI Director James Comey.

Thu, Sep 24, 2015

Apple blocked CNNIC CA months after MITM attacks

In March of this year, Google found unauthorized digital certificates for several Google domains. The root certificate authority for these domains was the China Internet Network Information Center (CNNIC). CNNIC was controlled by the Chinese government through the Ministry of Industry and Information Technology and is now under the management of the Cyberspace Administration of China (CAC). CNNIC was recognized by all major browsers as a trusted Certificate Authority. If CNNIC signs a fake certificate used in a man-in-the-middle attack, no browser will warn of any unusual activity unless the certificate is pinned.

After Google found these unauthorized certificates, both Google and Firefox revoked its trust in CNNIC a few days later, a development we at have adovacting for since 2013. Apple and Microsoft on the other hand, did not revoke their trust in CNNIC, nor did they make any announcements regarding the security compromise.

Wed, Sep 23, 2015

Malicious Xcode could spread via download manager Xunlei

What’s at stake?

We reported last week that popular Chinese iOS apps were compromised in an unprecedented malware attack. We discovered that the source of the infection was compromised copies of Xcode hosted on Baidu Pan. Apple has published an article urging developers to download Xcode directly from the Mac App Store, or from the Apple Developer website and validate signatures. We’ve now discovered that even if a developer uses a download link seemingly from Apple, he might still be possible to obtain a compromised copy of Xcode.

Please note that we do not have evidence that such attacks has happened. But it is an easy attack that anyone can implement.

How does it work?

This compromise happened because of Xunlei. Xunlei is the most popular download manager in China. Much of its popularity is due to the fact they can accelerate download speeds by pulling resources from other Xunlei users as well as cached copies on the Xunlei server. All of this, however, is invisible to users. Users can simply enter a regular http download address into Xunlei  download manager and the download will start. Chinese developers were using direct download addresses such as to download Xcode.

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my biggest beef is that was also down for quite significant amount of time. Now, since I was a mere mortal without sophisticated network monitoring algorithms at hand, trying to do some work, i couldn't tell how long it was out for. But i swear that it was down for quite some time. Which was pissing me off -- i mean, Are you serious???

I believe you're right. Since China poisoned "*" which would also match subdomain.

Thanks for your workarounds. However, none work at this time, November 12, at 20:42

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