How do I know if the website is blocked by the Internet provider?

I can ping locally, but I can"t get on it. I can do it locally at home. URL http://developer.mozilla.org

Aug.19,2021

Don't think about it. The result of this website dig shows that it is hosted in cloudfront.net , and is basically killed in China. At present, it is almost impossible to access all kinds of services of AWS in China.


(as far as I know, MDN has not been bullied. )
my experience is generally DNS pollution, or simply routing failure. To solve the problem, the first is to switch to larger public DNS services (such as Aliyun's 223.5.5.5 and 223.6.6.6). Second, if the DNS does not work, you might as well search an anonymous HTTP proxy (of course, you can also set up one yourself), hang up proxy access, generally no problem.

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