Recently, I visited multiple websites using Cloudflare CDN service from a fixed IP, but none of them can be accessed. The browser prompts: ERR_CONNECTION_TIMED_OUT.
ping test is ok, tracert test is ok, but tcpping test request timedout. This looks like TCP blocking?
I switched to another fixed IP and the access was normal. But it was blocked again in less than an hour.
After I changed the third IP, it is still normal for more than a day until now.
I want to confirm if this is a problem with Cloudflare?