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Is codeforces.com down?

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No problems

Our last check reached it, and nobody is reporting problems right now.

  • Our check: up, 8 hours ago from Germany · answered in 195 ms
  • 0 problem reports in the last 30 minutes
  • Served through Cloudflare
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0problem reports, last 24 hours
100%uptime in our checks, last 24 hours
195 msresponse time
100countries where it is among the most visited

Problem reports, last 24 hours

No reports

reports per 15 minutes usual level our check: up our check: down

Problem reports for codeforces.com, last 24 hours

Reports per 15 minutes, and what our own checks found. Times are in your time zone.

reports per 15 minutes usual level our check: up our check: down

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Problem reports for codeforces.com, last 24 hours
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What doesn't work on codeforces.com?

Anonymous: we keep the problem, the time and your country, not your address.

codeforces.com: our checks and outages

We check codeforces.com about once a day from our server in Germany, and again within a minute whenever someone reports a problem. Since October 21, 2026, none of our checks found it down. Nobody reported a problem with it here in the last 30 days.

Among the most visited sites in

and 88 more countries

Chrome UX Report rank groups (Google), September 2026.

Not loading for you? Things to try

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  3. Restart your router, or use a public DNS. For example 1.1.1.1 or 8.8.8.8: a broken DNS makes sites "disappear".
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  5. Many reports here? Then it is not you. Wait a little and check back: you can press "Check again" once an hour.

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    A website can be down for everyone, or only unreachable from some places. Our result is from our server in Germany; sites that look down are checked again a few seconds later, and our live checks also ask a second server in another country. About our checks, and how to opt out