When I type "codeforces.com" to my browser, it shows me a blank page. It doesn't pretend to be loading something. It just shows a blank page. However, when I try to go to codeforces.com through a proxy server, it works normally (and that's how I wrote this post).
Have you ever had a similar issue? Do you know what can it be caused by and how to fix it?
UPD: It doesn't work normally even through a proxy -- I can't reply to comments (I think it's some feature of using proxy). So I will answer them here.
Yes, I tried a differend browser and also a different device. Neither of them works.
UPD2: Now it started working properly even without a proxy. But I still wonder how and why it happened.