It is not that any region is blocked, as Yui says it’s a protection on the web servers. Wait and try again and you should be fine.

Thanks for your reply.

I know ngx_http_limit_req_module is useful nginx module for rate limiting, but it’s hard to believe that most of China are restricted[1]. Much looks like geographical blocking with IP Geolocation Database[2], and it returns HTTP 429 rather than HTTP 403.

I also see that some posts in Chinese forum complain they can’t visit www.remarpro.com:

https://www.v2ex.com/t/610269

English Translation: https://translate.google.com/translate?sl=zh-CN&tl=en&u=https%3A%2F%2Fwww.v2ex.com%2Ft%2F610269
https://www.hostloc.com/thread-597309-1-1.html

[English Translation: https://translate.google.com/translate?sl=zh-CN&tl=en&u=https%3A%2F%2Fwww.hostloc.com%2Fthread-597309-1-1.html]

[1] An online ping website show that its probe in many Chinese locations are restricting as “429”, see “Http状态”(HTTP status code) on the table: https://www.17ce.com/site/http/20191019_fb43e0f0f26111e9ab8c05c7fa0e7c63:1.html

[2] ngx_http_geoip_module with MaxMind databases could do this: https://nginx.org/en/docs/http/ngx_http_geoip_module.html;
Nginx Plus also provides a similar feature: https://docs.nginx.com/nginx/admin-guide/security-controls/controlling-access-by-geoip/

Please, let www.remarpro.com know and solve the problem.

This is understandably frustrating, I’ve requested an updated status on the situation, and will get back to you once I’ve heard back, but just to quote my self, so you all have the same information as me at this time:

There’s an ongoing issue with a lot of malicious traffic originating from the Chinese region. This is making the www.remarpro.com security systems limit connectivity from affected areas, and unfortunately also negatively affecting legitimate users.

We’re actively monitoring the situation, and are looking into ways to remedy this for real users, but due to how internet traffic is routed it’s not something that is likely solved quickly.